diff --git a/doc/pub/week36/html/._week36-bs000.html b/doc/pub/week36/html/._week36-bs000.html
index e1557c0ca..50b40fae8 100644
--- a/doc/pub/week36/html/._week36-bs000.html
+++ b/doc/pub/week36/html/._week36-bs000.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
@@ -265,7 +265,7 @@ MathJax.Hub.Config({
 <!-- ------------------- main content ---------------------- -->
 <div class="jumbotron">
 <center>
-<h1>Week 36: Linear Rgeression and Statistical interpretations</h1>
+<h1>Week 36: Linear Regression and Statistical interpretations</h1>
 </center>  <!-- document title -->
 
 <!-- author(s): Morten Hjorth-Jensen -->
diff --git a/doc/pub/week36/html/._week36-bs001.html b/doc/pub/week36/html/._week36-bs001.html
index 12ef2a484..0cb826e59 100644
--- a/doc/pub/week36/html/._week36-bs001.html
+++ b/doc/pub/week36/html/._week36-bs001.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
diff --git a/doc/pub/week36/html/._week36-bs002.html b/doc/pub/week36/html/._week36-bs002.html
index c3e7a8c72..0a2d04790 100644
--- a/doc/pub/week36/html/._week36-bs002.html
+++ b/doc/pub/week36/html/._week36-bs002.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
@@ -307,6 +307,8 @@ penalization of the parameters since their magnitude&#160;depends on the
 scale of their corresponding&#160;predictor.
 </p>
 
+<p>The <b>Scikit-Learn</b> site <a href="https://scikit-learn.org/stable/auto_examples/preprocessing/plot_all_scaling.html#plot-all-scaling-standard-scaler-section" target="_self"><tt>https://scikit-learn.org/stable/auto_examples/preprocessing/plot_all_scaling.html#plot-all-scaling-standard-scaler-section</tt></a> has a good discussion of different ways of preprocessing data.</p>
+
 <p>Suppose as an example that you 
 you have an input&#160;variable given by the heights of different persons.
 Human height might be measured in inches or meters or
@@ -541,7 +543,7 @@ beta <span style="color: #666666">=</span> fit_beta(X <span style="color: #66666
 intercept <span style="color: #666666">=</span> np<span style="color: #666666">.</span>mean(y_offset <span style="color: #666666">-</span> X_offset <span style="color: #666666">@</span> beta)
 
 <span style="color: #008000">print</span>(<span style="color: #BA2121">f&quot;Manual intercept: </span><span style="color: #BB6688; font-weight: bold">{</span>intercept<span style="color: #BB6688; font-weight: bold">}</span><span style="color: #BA2121">&quot;</span>)
-<span style="color: #008000">print</span>(<span style="color: #BA2121">f&quot;Fitted beta (wiothout intercept): </span><span style="color: #BB6688; font-weight: bold">{</span>beta<span style="color: #BB6688; font-weight: bold">}</span><span style="color: #BA2121">&quot;</span>)
+<span style="color: #008000">print</span>(<span style="color: #BA2121">f&quot;Fitted beta (without intercept): </span><span style="color: #BB6688; font-weight: bold">{</span>beta<span style="color: #BB6688; font-weight: bold">}</span><span style="color: #BA2121">&quot;</span>)
 <span style="color: #008000">print</span>(<span style="color: #BA2121">f&quot;Sklearn intercept: </span><span style="color: #BB6688; font-weight: bold">{</span>skl<span style="color: #666666">.</span>intercept_<span style="color: #BB6688; font-weight: bold">}</span><span style="color: #BA2121">&quot;</span>)
 <span style="color: #008000">print</span>(<span style="color: #BA2121">f&quot;Sklearn fitted beta (without intercept): </span><span style="color: #BB6688; font-weight: bold">{</span>skl<span style="color: #666666">.</span>coef_<span style="color: #BB6688; font-weight: bold">}</span><span style="color: #BA2121">&quot;</span>)
 ypredictOwn <span style="color: #666666">=</span> X <span style="color: #666666">@</span> beta
diff --git a/doc/pub/week36/html/._week36-bs003.html b/doc/pub/week36/html/._week36-bs003.html
index caad5a5d0..1ec9f00f0 100644
--- a/doc/pub/week36/html/._week36-bs003.html
+++ b/doc/pub/week36/html/._week36-bs003.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
diff --git a/doc/pub/week36/html/._week36-bs004.html b/doc/pub/week36/html/._week36-bs004.html
index c50ced361..4e9835f0f 100644
--- a/doc/pub/week36/html/._week36-bs004.html
+++ b/doc/pub/week36/html/._week36-bs004.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
diff --git a/doc/pub/week36/html/._week36-bs005.html b/doc/pub/week36/html/._week36-bs005.html
index 12da6e539..4588482ac 100644
--- a/doc/pub/week36/html/._week36-bs005.html
+++ b/doc/pub/week36/html/._week36-bs005.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
diff --git a/doc/pub/week36/html/._week36-bs006.html b/doc/pub/week36/html/._week36-bs006.html
index 07ac8d386..1decce8ef 100644
--- a/doc/pub/week36/html/._week36-bs006.html
+++ b/doc/pub/week36/html/._week36-bs006.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
diff --git a/doc/pub/week36/html/._week36-bs007.html b/doc/pub/week36/html/._week36-bs007.html
index 6873be172..46ad1e3ad 100644
--- a/doc/pub/week36/html/._week36-bs007.html
+++ b/doc/pub/week36/html/._week36-bs007.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
diff --git a/doc/pub/week36/html/._week36-bs008.html b/doc/pub/week36/html/._week36-bs008.html
index 88d66119f..2195033bb 100644
--- a/doc/pub/week36/html/._week36-bs008.html
+++ b/doc/pub/week36/html/._week36-bs008.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
diff --git a/doc/pub/week36/html/._week36-bs009.html b/doc/pub/week36/html/._week36-bs009.html
index 9abe352cb..45094a0d9 100644
--- a/doc/pub/week36/html/._week36-bs009.html
+++ b/doc/pub/week36/html/._week36-bs009.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
diff --git a/doc/pub/week36/html/._week36-bs010.html b/doc/pub/week36/html/._week36-bs010.html
index df78b1da8..74c2c2208 100644
--- a/doc/pub/week36/html/._week36-bs010.html
+++ b/doc/pub/week36/html/._week36-bs010.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
diff --git a/doc/pub/week36/html/._week36-bs011.html b/doc/pub/week36/html/._week36-bs011.html
index 7b3e17d2a..2fa906caa 100644
--- a/doc/pub/week36/html/._week36-bs011.html
+++ b/doc/pub/week36/html/._week36-bs011.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
diff --git a/doc/pub/week36/html/._week36-bs012.html b/doc/pub/week36/html/._week36-bs012.html
index 93995083d..294cdd878 100644
--- a/doc/pub/week36/html/._week36-bs012.html
+++ b/doc/pub/week36/html/._week36-bs012.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
diff --git a/doc/pub/week36/html/._week36-bs013.html b/doc/pub/week36/html/._week36-bs013.html
index 427272568..baadc87e8 100644
--- a/doc/pub/week36/html/._week36-bs013.html
+++ b/doc/pub/week36/html/._week36-bs013.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
diff --git a/doc/pub/week36/html/._week36-bs014.html b/doc/pub/week36/html/._week36-bs014.html
index a3e6684a0..46c8355fe 100644
--- a/doc/pub/week36/html/._week36-bs014.html
+++ b/doc/pub/week36/html/._week36-bs014.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
diff --git a/doc/pub/week36/html/._week36-bs015.html b/doc/pub/week36/html/._week36-bs015.html
index 6aa4eb724..675ca3af2 100644
--- a/doc/pub/week36/html/._week36-bs015.html
+++ b/doc/pub/week36/html/._week36-bs015.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
diff --git a/doc/pub/week36/html/._week36-bs016.html b/doc/pub/week36/html/._week36-bs016.html
index e41265b82..aa3175dda 100644
--- a/doc/pub/week36/html/._week36-bs016.html
+++ b/doc/pub/week36/html/._week36-bs016.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
diff --git a/doc/pub/week36/html/._week36-bs017.html b/doc/pub/week36/html/._week36-bs017.html
index dfd13dd9b..4a2e75ecd 100644
--- a/doc/pub/week36/html/._week36-bs017.html
+++ b/doc/pub/week36/html/._week36-bs017.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
diff --git a/doc/pub/week36/html/._week36-bs018.html b/doc/pub/week36/html/._week36-bs018.html
index 07f20dd40..b61b27893 100644
--- a/doc/pub/week36/html/._week36-bs018.html
+++ b/doc/pub/week36/html/._week36-bs018.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
diff --git a/doc/pub/week36/html/._week36-bs019.html b/doc/pub/week36/html/._week36-bs019.html
index 5ae4ea870..e701d6aad 100644
--- a/doc/pub/week36/html/._week36-bs019.html
+++ b/doc/pub/week36/html/._week36-bs019.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
diff --git a/doc/pub/week36/html/._week36-bs020.html b/doc/pub/week36/html/._week36-bs020.html
index 60c2f023d..df3e9d9a4 100644
--- a/doc/pub/week36/html/._week36-bs020.html
+++ b/doc/pub/week36/html/._week36-bs020.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
diff --git a/doc/pub/week36/html/._week36-bs021.html b/doc/pub/week36/html/._week36-bs021.html
index c315f03b3..241e2b578 100644
--- a/doc/pub/week36/html/._week36-bs021.html
+++ b/doc/pub/week36/html/._week36-bs021.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
diff --git a/doc/pub/week36/html/._week36-bs022.html b/doc/pub/week36/html/._week36-bs022.html
index c992f5f80..a50f7359e 100644
--- a/doc/pub/week36/html/._week36-bs022.html
+++ b/doc/pub/week36/html/._week36-bs022.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
diff --git a/doc/pub/week36/html/._week36-bs023.html b/doc/pub/week36/html/._week36-bs023.html
index 69c0d8cf1..5db841b35 100644
--- a/doc/pub/week36/html/._week36-bs023.html
+++ b/doc/pub/week36/html/._week36-bs023.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
diff --git a/doc/pub/week36/html/._week36-bs024.html b/doc/pub/week36/html/._week36-bs024.html
index f2679458f..021a791bd 100644
--- a/doc/pub/week36/html/._week36-bs024.html
+++ b/doc/pub/week36/html/._week36-bs024.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
diff --git a/doc/pub/week36/html/._week36-bs025.html b/doc/pub/week36/html/._week36-bs025.html
index 803aad85c..c79e5128d 100644
--- a/doc/pub/week36/html/._week36-bs025.html
+++ b/doc/pub/week36/html/._week36-bs025.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
diff --git a/doc/pub/week36/html/._week36-bs026.html b/doc/pub/week36/html/._week36-bs026.html
index febd3f08e..2a0d16e3c 100644
--- a/doc/pub/week36/html/._week36-bs026.html
+++ b/doc/pub/week36/html/._week36-bs026.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
diff --git a/doc/pub/week36/html/._week36-bs027.html b/doc/pub/week36/html/._week36-bs027.html
index 4ecc70871..65cdab59d 100644
--- a/doc/pub/week36/html/._week36-bs027.html
+++ b/doc/pub/week36/html/._week36-bs027.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
diff --git a/doc/pub/week36/html/._week36-bs028.html b/doc/pub/week36/html/._week36-bs028.html
index 274e2f496..cbe3c9f5d 100644
--- a/doc/pub/week36/html/._week36-bs028.html
+++ b/doc/pub/week36/html/._week36-bs028.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
diff --git a/doc/pub/week36/html/._week36-bs029.html b/doc/pub/week36/html/._week36-bs029.html
index 173380784..0da0f3ad9 100644
--- a/doc/pub/week36/html/._week36-bs029.html
+++ b/doc/pub/week36/html/._week36-bs029.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
diff --git a/doc/pub/week36/html/._week36-bs030.html b/doc/pub/week36/html/._week36-bs030.html
index 344c82bac..ff9159a85 100644
--- a/doc/pub/week36/html/._week36-bs030.html
+++ b/doc/pub/week36/html/._week36-bs030.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
diff --git a/doc/pub/week36/html/._week36-bs031.html b/doc/pub/week36/html/._week36-bs031.html
index 150589319..b0cbb1df4 100644
--- a/doc/pub/week36/html/._week36-bs031.html
+++ b/doc/pub/week36/html/._week36-bs031.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
diff --git a/doc/pub/week36/html/._week36-bs032.html b/doc/pub/week36/html/._week36-bs032.html
index 8ea0cb8d1..6d91916cc 100644
--- a/doc/pub/week36/html/._week36-bs032.html
+++ b/doc/pub/week36/html/._week36-bs032.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
diff --git a/doc/pub/week36/html/._week36-bs033.html b/doc/pub/week36/html/._week36-bs033.html
index 5b4aaaf64..6b6be9d2d 100644
--- a/doc/pub/week36/html/._week36-bs033.html
+++ b/doc/pub/week36/html/._week36-bs033.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
diff --git a/doc/pub/week36/html/._week36-bs034.html b/doc/pub/week36/html/._week36-bs034.html
index d1d5dc03f..921b18c1a 100644
--- a/doc/pub/week36/html/._week36-bs034.html
+++ b/doc/pub/week36/html/._week36-bs034.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
diff --git a/doc/pub/week36/html/._week36-bs035.html b/doc/pub/week36/html/._week36-bs035.html
index c4b4e4185..60622520c 100644
--- a/doc/pub/week36/html/._week36-bs035.html
+++ b/doc/pub/week36/html/._week36-bs035.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
diff --git a/doc/pub/week36/html/._week36-bs036.html b/doc/pub/week36/html/._week36-bs036.html
index 73afbc249..86e1fb7a1 100644
--- a/doc/pub/week36/html/._week36-bs036.html
+++ b/doc/pub/week36/html/._week36-bs036.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
diff --git a/doc/pub/week36/html/._week36-bs037.html b/doc/pub/week36/html/._week36-bs037.html
index 21852c5ea..a9af5116a 100644
--- a/doc/pub/week36/html/._week36-bs037.html
+++ b/doc/pub/week36/html/._week36-bs037.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
diff --git a/doc/pub/week36/html/._week36-bs038.html b/doc/pub/week36/html/._week36-bs038.html
index d05b6a955..2bac76d76 100644
--- a/doc/pub/week36/html/._week36-bs038.html
+++ b/doc/pub/week36/html/._week36-bs038.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
diff --git a/doc/pub/week36/html/._week36-bs039.html b/doc/pub/week36/html/._week36-bs039.html
index c213f7b95..7e12f7fce 100644
--- a/doc/pub/week36/html/._week36-bs039.html
+++ b/doc/pub/week36/html/._week36-bs039.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
diff --git a/doc/pub/week36/html/._week36-bs040.html b/doc/pub/week36/html/._week36-bs040.html
index 43335b6dd..3a66693c4 100644
--- a/doc/pub/week36/html/._week36-bs040.html
+++ b/doc/pub/week36/html/._week36-bs040.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
diff --git a/doc/pub/week36/html/._week36-bs041.html b/doc/pub/week36/html/._week36-bs041.html
index bc7fddd7b..ffb27adb2 100644
--- a/doc/pub/week36/html/._week36-bs041.html
+++ b/doc/pub/week36/html/._week36-bs041.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
diff --git a/doc/pub/week36/html/._week36-bs042.html b/doc/pub/week36/html/._week36-bs042.html
index 7e36e56f5..38ab92311 100644
--- a/doc/pub/week36/html/._week36-bs042.html
+++ b/doc/pub/week36/html/._week36-bs042.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
diff --git a/doc/pub/week36/html/._week36-bs043.html b/doc/pub/week36/html/._week36-bs043.html
index cde47de26..d0b42b8d1 100644
--- a/doc/pub/week36/html/._week36-bs043.html
+++ b/doc/pub/week36/html/._week36-bs043.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
diff --git a/doc/pub/week36/html/._week36-bs044.html b/doc/pub/week36/html/._week36-bs044.html
index 1d3e5f5e4..1c3c8c332 100644
--- a/doc/pub/week36/html/._week36-bs044.html
+++ b/doc/pub/week36/html/._week36-bs044.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
diff --git a/doc/pub/week36/html/._week36-bs045.html b/doc/pub/week36/html/._week36-bs045.html
index 731ac750b..d9b0f9dea 100644
--- a/doc/pub/week36/html/._week36-bs045.html
+++ b/doc/pub/week36/html/._week36-bs045.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
diff --git a/doc/pub/week36/html/._week36-bs046.html b/doc/pub/week36/html/._week36-bs046.html
index af956297b..70f729f76 100644
--- a/doc/pub/week36/html/._week36-bs046.html
+++ b/doc/pub/week36/html/._week36-bs046.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
diff --git a/doc/pub/week36/html/._week36-bs047.html b/doc/pub/week36/html/._week36-bs047.html
index d69356982..438e8c93e 100644
--- a/doc/pub/week36/html/._week36-bs047.html
+++ b/doc/pub/week36/html/._week36-bs047.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
diff --git a/doc/pub/week36/html/._week36-bs048.html b/doc/pub/week36/html/._week36-bs048.html
index 764516c89..8db7ebe26 100644
--- a/doc/pub/week36/html/._week36-bs048.html
+++ b/doc/pub/week36/html/._week36-bs048.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
diff --git a/doc/pub/week36/html/week36-bs.html b/doc/pub/week36/html/week36-bs.html
index e1557c0ca..50b40fae8 100644
--- a/doc/pub/week36/html/week36-bs.html
+++ b/doc/pub/week36/html/week36-bs.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=d
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <!-- Bootstrap style: bootstrap -->
 <!-- doconce format html week36.do.txt --html_style=bootstrap --pygments_html_style=default --html_admon=bootstrap_panel --html_output=week36-bs --no_mako -->
 <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css" rel="stylesheet">
@@ -196,7 +196,7 @@ MathJax.Hub.Config({
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
     </button>
-    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Rgeression and Statistical interpretations</a>
+    <a class="navbar-brand" href="week36-bs.html">Week 36: Linear Regression and Statistical interpretations</a>
   </div>
   <div class="navbar-collapse collapse navbar-responsive-collapse">
     <ul class="nav navbar-nav navbar-right">
@@ -265,7 +265,7 @@ MathJax.Hub.Config({
 <!-- ------------------- main content ---------------------- -->
 <div class="jumbotron">
 <center>
-<h1>Week 36: Linear Rgeression and Statistical interpretations</h1>
+<h1>Week 36: Linear Regression and Statistical interpretations</h1>
 </center>  <!-- document title -->
 
 <!-- author(s): Morten Hjorth-Jensen -->
diff --git a/doc/pub/week36/html/week36-reveal.html b/doc/pub/week36/html/week36-reveal.html
index 5b120b111..225250ee9 100644
--- a/doc/pub/week36/html/week36-reveal.html
+++ b/doc/pub/week36/html/week36-reveal.html
@@ -9,8 +9,8 @@ doconce format html week36-reveal.html week36-reveal reveal --html_slide_theme=b
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 
 <!-- reveal.js: https://lab.hakim.se/reveal-js/ -->
 
@@ -168,7 +168,7 @@ MathJax.Hub.Config({
 <section>
 <!-- ------------------- main content ---------------------- -->
 <center>
-<h1 style="text-align: center;">Week 36: Linear Rgeression and Statistical interpretations</h1>
+<h1 style="text-align: center;">Week 36: Linear Regression and Statistical interpretations</h1>
 </center>  <!-- document title -->
 
 <!-- author(s): Morten Hjorth-Jensen -->
@@ -272,6 +272,8 @@ penalization of the parameters since their magnitude&#160;depends on the
 scale of their corresponding&#160;predictor.
 </p>
 
+<p>The <b>Scikit-Learn</b> site <a href="https://scikit-learn.org/stable/auto_examples/preprocessing/plot_all_scaling.html#plot-all-scaling-standard-scaler-section" target="_blank"><tt>https://scikit-learn.org/stable/auto_examples/preprocessing/plot_all_scaling.html#plot-all-scaling-standard-scaler-section</tt></a> has a good discussion of different ways of preprocessing data.</p>
+
 <p>Suppose as an example that you 
 you have an input&#160;variable given by the heights of different persons.
 Human height might be measured in inches or meters or
@@ -536,7 +538,7 @@ beta = fit_beta(X - X_offset, y - y_offset)
 intercept = np.mean(y_offset - X_offset @ beta)
 
 <span style="color: #658b00">print</span>(<span style="color: #CD5555">f&quot;Manual intercept: {</span>intercept<span style="color: #CD5555">}&quot;</span>)
-<span style="color: #658b00">print</span>(<span style="color: #CD5555">f&quot;Fitted beta (wiothout intercept): {</span>beta<span style="color: #CD5555">}&quot;</span>)
+<span style="color: #658b00">print</span>(<span style="color: #CD5555">f&quot;Fitted beta (without intercept): {</span>beta<span style="color: #CD5555">}&quot;</span>)
 <span style="color: #658b00">print</span>(<span style="color: #CD5555">f&quot;Sklearn intercept: {</span>skl.intercept_<span style="color: #CD5555">}&quot;</span>)
 <span style="color: #658b00">print</span>(<span style="color: #CD5555">f&quot;Sklearn fitted beta (without intercept): {</span>skl.coef_<span style="color: #CD5555">}&quot;</span>)
 ypredictOwn = X @ beta
diff --git a/doc/pub/week36/html/week36-solarized.html b/doc/pub/week36/html/week36-solarized.html
index 61248b081..6d6af5071 100644
--- a/doc/pub/week36/html/week36-solarized.html
+++ b/doc/pub/week36/html/week36-solarized.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --pygments_html_style=perldoc --html_style=sol
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <link href="https://cdn.rawgit.com/doconce/doconce/master/bundled/html_styles/style_solarized_box/css/solarized_light_code.css" rel="stylesheet" type="text/css" title="light"/>
 <script src="https://cdn.rawgit.com/doconce/doconce/master/bundled/html_styles/style_solarized_box/js/highlight.pack.js"></script>
 <script>hljs.initHighlightingOnLoad();</script>
@@ -217,7 +217,7 @@ MathJax.Hub.Config({
 
 <!-- ------------------- main content ---------------------- -->
 <center>
-<h1>Week 36: Linear Rgeression and Statistical interpretations</h1>
+<h1>Week 36: Linear Regression and Statistical interpretations</h1>
 </center>  <!-- document title -->
 
 <!-- author(s): Morten Hjorth-Jensen -->
@@ -302,6 +302,8 @@ penalization of the parameters since their magnitude&#160;depends on the
 scale of their corresponding&#160;predictor.
 </p>
 
+<p>The <b>Scikit-Learn</b> site <a href="https://scikit-learn.org/stable/auto_examples/preprocessing/plot_all_scaling.html#plot-all-scaling-standard-scaler-section" target="_blank"><tt>https://scikit-learn.org/stable/auto_examples/preprocessing/plot_all_scaling.html#plot-all-scaling-standard-scaler-section</tt></a> has a good discussion of different ways of preprocessing data.</p>
+
 <p>Suppose as an example that you 
 you have an input&#160;variable given by the heights of different persons.
 Human height might be measured in inches or meters or
@@ -536,7 +538,7 @@ beta = fit_beta(X - X_offset, y - y_offset)
 intercept = np.mean(y_offset - X_offset @ beta)
 
 <span style="color: #658b00">print</span>(<span style="color: #CD5555">f&quot;Manual intercept: {</span>intercept<span style="color: #CD5555">}&quot;</span>)
-<span style="color: #658b00">print</span>(<span style="color: #CD5555">f&quot;Fitted beta (wiothout intercept): {</span>beta<span style="color: #CD5555">}&quot;</span>)
+<span style="color: #658b00">print</span>(<span style="color: #CD5555">f&quot;Fitted beta (without intercept): {</span>beta<span style="color: #CD5555">}&quot;</span>)
 <span style="color: #658b00">print</span>(<span style="color: #CD5555">f&quot;Sklearn intercept: {</span>skl.intercept_<span style="color: #CD5555">}&quot;</span>)
 <span style="color: #658b00">print</span>(<span style="color: #CD5555">f&quot;Sklearn fitted beta (without intercept): {</span>skl.coef_<span style="color: #CD5555">}&quot;</span>)
 ypredictOwn = X @ beta
diff --git a/doc/pub/week36/html/week36.html b/doc/pub/week36/html/week36.html
index 7a8cc45e0..382b013e0 100644
--- a/doc/pub/week36/html/week36.html
+++ b/doc/pub/week36/html/week36.html
@@ -8,8 +8,8 @@ doconce format html week36.do.txt --pygments_html_style=default --html_style=blo
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="DocOnce: https://github.com/doconce/doconce/" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-<meta name="description" content="Week 36: Linear Rgeression and Statistical interpretations">
-<title>Week 36: Linear Rgeression and Statistical interpretations</title>
+<meta name="description" content="Week 36: Linear Regression and Statistical interpretations">
+<title>Week 36: Linear Regression and Statistical interpretations</title>
 <style type="text/css">
 /* bloodish style */
 body {
@@ -294,7 +294,7 @@ MathJax.Hub.Config({
 
 <!-- ------------------- main content ---------------------- -->
 <center>
-<h1>Week 36: Linear Rgeression and Statistical interpretations</h1>
+<h1>Week 36: Linear Regression and Statistical interpretations</h1>
 </center>  <!-- document title -->
 
 <!-- author(s): Morten Hjorth-Jensen -->
@@ -379,6 +379,8 @@ penalization of the parameters since their magnitude&#160;depends on the
 scale of their corresponding&#160;predictor.
 </p>
 
+<p>The <b>Scikit-Learn</b> site <a href="https://scikit-learn.org/stable/auto_examples/preprocessing/plot_all_scaling.html#plot-all-scaling-standard-scaler-section" target="_blank"><tt>https://scikit-learn.org/stable/auto_examples/preprocessing/plot_all_scaling.html#plot-all-scaling-standard-scaler-section</tt></a> has a good discussion of different ways of preprocessing data.</p>
+
 <p>Suppose as an example that you 
 you have an input&#160;variable given by the heights of different persons.
 Human height might be measured in inches or meters or
@@ -613,7 +615,7 @@ beta <span style="color: #666666">=</span> fit_beta(X <span style="color: #66666
 intercept <span style="color: #666666">=</span> np<span style="color: #666666">.</span>mean(y_offset <span style="color: #666666">-</span> X_offset <span style="color: #666666">@</span> beta)
 
 <span style="color: #008000">print</span>(<span style="color: #BA2121">f&quot;Manual intercept: </span><span style="color: #BB6688; font-weight: bold">{</span>intercept<span style="color: #BB6688; font-weight: bold">}</span><span style="color: #BA2121">&quot;</span>)
-<span style="color: #008000">print</span>(<span style="color: #BA2121">f&quot;Fitted beta (wiothout intercept): </span><span style="color: #BB6688; font-weight: bold">{</span>beta<span style="color: #BB6688; font-weight: bold">}</span><span style="color: #BA2121">&quot;</span>)
+<span style="color: #008000">print</span>(<span style="color: #BA2121">f&quot;Fitted beta (without intercept): </span><span style="color: #BB6688; font-weight: bold">{</span>beta<span style="color: #BB6688; font-weight: bold">}</span><span style="color: #BA2121">&quot;</span>)
 <span style="color: #008000">print</span>(<span style="color: #BA2121">f&quot;Sklearn intercept: </span><span style="color: #BB6688; font-weight: bold">{</span>skl<span style="color: #666666">.</span>intercept_<span style="color: #BB6688; font-weight: bold">}</span><span style="color: #BA2121">&quot;</span>)
 <span style="color: #008000">print</span>(<span style="color: #BA2121">f&quot;Sklearn fitted beta (without intercept): </span><span style="color: #BB6688; font-weight: bold">{</span>skl<span style="color: #666666">.</span>coef_<span style="color: #BB6688; font-weight: bold">}</span><span style="color: #BA2121">&quot;</span>)
 ypredictOwn <span style="color: #666666">=</span> X <span style="color: #666666">@</span> beta
diff --git a/doc/pub/week36/ipynb/ipynb-week36-src.tar.gz b/doc/pub/week36/ipynb/ipynb-week36-src.tar.gz
index 76339cb8f..11f2c34ad 100644
Binary files a/doc/pub/week36/ipynb/ipynb-week36-src.tar.gz and b/doc/pub/week36/ipynb/ipynb-week36-src.tar.gz differ
diff --git a/doc/pub/week36/ipynb/week36.ipynb b/doc/pub/week36/ipynb/week36.ipynb
index 9d7c9b89a..54d22c2f8 100644
--- a/doc/pub/week36/ipynb/week36.ipynb
+++ b/doc/pub/week36/ipynb/week36.ipynb
@@ -2,24 +2,24 @@
  "cells": [
   {
    "cell_type": "markdown",
-   "id": "03b68af2",
+   "id": "9c0dc318",
    "metadata": {
     "editable": true
    },
    "source": [
     "<!-- HTML file automatically generated from DocOnce source (https://github.com/doconce/doconce/)\n",
     "doconce format html week36.do.txt --no_mako -->\n",
-    "<!-- dom:TITLE: Week 36: Linear Rgeression and Statistical interpretations -->"
+    "<!-- dom:TITLE: Week 36: Linear Regression and Statistical interpretations -->"
    ]
   },
   {
    "cell_type": "markdown",
-   "id": "91ddfc70",
+   "id": "849ba8af",
    "metadata": {
     "editable": true
    },
    "source": [
-    "# Week 36: Linear Rgeression and Statistical interpretations\n",
+    "# Week 36: Linear Regression and Statistical interpretations\n",
     "**Morten Hjorth-Jensen**, Department of Physics, University of Oslo and Department of Physics and Astronomy and National Superconducting Cyclotron Laboratory, Michigan State University\n",
     "\n",
     "Date: **September 2-6, 2024**"
@@ -27,7 +27,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "c25f7c42",
+   "id": "728b1450",
    "metadata": {
     "editable": true
    },
@@ -59,7 +59,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "f5230b8b",
+   "id": "fa824343",
    "metadata": {
     "editable": true
    },
@@ -69,7 +69,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "fbd9ed4d",
+   "id": "127a1d85",
    "metadata": {
     "editable": true
    },
@@ -111,6 +111,8 @@
     "penalization of the parameters since their magnitude depends on the\n",
     "scale of their corresponding predictor.\n",
     "\n",
+    "The **Scikit-Learn** site <https://scikit-learn.org/stable/auto_examples/preprocessing/plot_all_scaling.html#plot-all-scaling-standard-scaler-section> has a good discussion of different ways of preprocessing data.\n",
+    "\n",
     "Suppose as an example that you \n",
     "you have an input variable given by the heights of different persons.\n",
     "Human height might be measured in inches or meters or\n",
@@ -126,7 +128,7 @@
   {
    "cell_type": "code",
    "execution_count": 1,
-   "id": "a5ec261b",
+   "id": "c6ebacde",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -153,7 +155,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "5cc0694a",
+   "id": "fc178524",
    "metadata": {
     "editable": true
    },
@@ -167,7 +169,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "e3b8bc0b",
+   "id": "59f7961a",
    "metadata": {
     "editable": true
    },
@@ -179,7 +181,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "fd6de781",
+   "id": "be28a0cf",
    "metadata": {
     "editable": true
    },
@@ -196,7 +198,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "bfd7a040",
+   "id": "85a4c84d",
    "metadata": {
     "editable": true
    },
@@ -208,7 +210,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "41e1b93b",
+   "id": "218f120f",
    "metadata": {
     "editable": true
    },
@@ -218,7 +220,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "24749eb9",
+   "id": "e348305f",
    "metadata": {
     "editable": true
    },
@@ -230,7 +232,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "b922308a",
+   "id": "a6bf603c",
    "metadata": {
     "editable": true
    },
@@ -240,7 +242,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "70be741b",
+   "id": "1323adc1",
    "metadata": {
     "editable": true
    },
@@ -252,7 +254,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "b295f0ba",
+   "id": "79c494d0",
    "metadata": {
     "editable": true
    },
@@ -263,7 +265,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "bb1e5813",
+   "id": "3c30949e",
    "metadata": {
     "editable": true
    },
@@ -275,7 +277,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "578817a0",
+   "id": "8faf8800",
    "metadata": {
     "editable": true
    },
@@ -285,7 +287,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "78bb7489",
+   "id": "6d811ffb",
    "metadata": {
     "editable": true
    },
@@ -297,7 +299,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "45cdf117",
+   "id": "bd68d409",
    "metadata": {
     "editable": true
    },
@@ -307,7 +309,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "d671bea1",
+   "id": "de53612d",
    "metadata": {
     "editable": true
    },
@@ -319,7 +321,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "f1e037f7",
+   "id": "6ef74f9d",
    "metadata": {
     "editable": true
    },
@@ -329,7 +331,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "5592094a",
+   "id": "77df1f8c",
    "metadata": {
     "editable": true
    },
@@ -341,7 +343,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "3784e759",
+   "id": "36bb7a6b",
    "metadata": {
     "editable": true
    },
@@ -351,7 +353,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "238e4a7c",
+   "id": "a0eab738",
    "metadata": {
     "editable": true
    },
@@ -363,7 +365,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "6d9e90e7",
+   "id": "47c6fc06",
    "metadata": {
     "editable": true
    },
@@ -373,7 +375,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "9ecc0ad6",
+   "id": "7af88710",
    "metadata": {
     "editable": true
    },
@@ -385,7 +387,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "5bb35680",
+   "id": "0c5e0f39",
    "metadata": {
     "editable": true
    },
@@ -395,7 +397,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "748c35c7",
+   "id": "b711214e",
    "metadata": {
     "editable": true
    },
@@ -407,7 +409,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "06776f59",
+   "id": "4dda1b9b",
    "metadata": {
     "editable": true
    },
@@ -417,7 +419,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "2d6d58ba",
+   "id": "06a3d0a4",
    "metadata": {
     "editable": true
    },
@@ -429,7 +431,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "cc9ff189",
+   "id": "29e6bed9",
    "metadata": {
     "editable": true
    },
@@ -441,7 +443,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "cc5996b6",
+   "id": "67fbd0e0",
    "metadata": {
     "editable": true
    },
@@ -453,7 +455,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "beac8256",
+   "id": "e957206a",
    "metadata": {
     "editable": true
    },
@@ -463,7 +465,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "70ffda09",
+   "id": "b4c37288",
    "metadata": {
     "editable": true
    },
@@ -475,7 +477,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "8d6e0895",
+   "id": "2a9a5c4f",
    "metadata": {
     "editable": true
    },
@@ -488,7 +490,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "b314aa68",
+   "id": "e50001bb",
    "metadata": {
     "editable": true
    },
@@ -500,7 +502,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "9c4a4032",
+   "id": "5f53b969",
    "metadata": {
     "editable": true
    },
@@ -514,7 +516,7 @@
   {
    "cell_type": "code",
    "execution_count": 2,
-   "id": "7851af68",
+   "id": "f6f9927d",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -593,7 +595,7 @@
     "intercept = np.mean(y_offset - X_offset @ beta)\n",
     "\n",
     "print(f\"Manual intercept: {intercept}\")\n",
-    "print(f\"Fitted beta (wiothout intercept): {beta}\")\n",
+    "print(f\"Fitted beta (without intercept): {beta}\")\n",
     "print(f\"Sklearn intercept: {skl.intercept_}\")\n",
     "print(f\"Sklearn fitted beta (without intercept): {skl.coef_}\")\n",
     "ypredictOwn = X @ beta\n",
@@ -613,7 +615,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "96995260",
+   "id": "291ce957",
    "metadata": {
     "editable": true
    },
@@ -634,7 +636,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "e02411ba",
+   "id": "c051ed4b",
    "metadata": {
     "editable": true
    },
@@ -646,7 +648,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "dd2082ec",
+   "id": "fe5619e0",
    "metadata": {
     "editable": true
    },
@@ -656,7 +658,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "701e4d68",
+   "id": "c774a2da",
    "metadata": {
     "editable": true
    },
@@ -668,7 +670,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "9d89244c",
+   "id": "7ff02147",
    "metadata": {
     "editable": true
    },
@@ -678,7 +680,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "596c0314",
+   "id": "8fa5265e",
    "metadata": {
     "editable": true
    },
@@ -690,7 +692,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "daf1b75f",
+   "id": "597a5084",
    "metadata": {
     "editable": true
    },
@@ -708,7 +710,7 @@
   {
    "cell_type": "code",
    "execution_count": 3,
-   "id": "94807025",
+   "id": "21c45264",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -784,7 +786,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "1c95fe0b",
+   "id": "c1da684b",
    "metadata": {
     "editable": true
    },
@@ -798,7 +800,7 @@
   {
    "cell_type": "code",
    "execution_count": 4,
-   "id": "bb5f871b",
+   "id": "e0559f64",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -887,7 +889,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "4724185f",
+   "id": "ec11139c",
    "metadata": {
     "editable": true
    },
@@ -902,7 +904,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "63a40c4b",
+   "id": "17620c10",
    "metadata": {
     "editable": true
    },
@@ -928,7 +930,7 @@
   {
    "cell_type": "code",
    "execution_count": 5,
-   "id": "44e30f6c",
+   "id": "9bc3430d",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -1001,7 +1003,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "7614dd80",
+   "id": "3cb22033",
    "metadata": {
     "editable": true
    },
@@ -1011,7 +1013,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "8d0b865b",
+   "id": "6ac74a15",
    "metadata": {
     "editable": true
    },
@@ -1040,7 +1042,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "7b3043fb",
+   "id": "3f2a8c3a",
    "metadata": {
     "editable": true
    },
@@ -1056,7 +1058,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "cbfeab43",
+   "id": "4ba99485",
    "metadata": {
     "editable": true
    },
@@ -1075,7 +1077,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "67514fcf",
+   "id": "d984cb84",
    "metadata": {
     "editable": true
    },
@@ -1089,7 +1091,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "f7557d7a",
+   "id": "3c1ddf74",
    "metadata": {
     "editable": true
    },
@@ -1101,7 +1103,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "60f32679",
+   "id": "37485db6",
    "metadata": {
     "editable": true
    },
@@ -1112,7 +1114,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "d5268089",
+   "id": "1561bf6c",
    "metadata": {
     "editable": true
    },
@@ -1124,7 +1126,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "1d98108e",
+   "id": "c3485e3e",
    "metadata": {
     "editable": true
    },
@@ -1136,7 +1138,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "6940b69c",
+   "id": "1a107c08",
    "metadata": {
     "editable": true
    },
@@ -1152,7 +1154,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "8c9b9e98",
+   "id": "8c501537",
    "metadata": {
     "editable": true
    },
@@ -1163,7 +1165,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "337a1fcc",
+   "id": "7ddca07f",
    "metadata": {
     "editable": true
    },
@@ -1186,7 +1188,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "b179e200",
+   "id": "3096528c",
    "metadata": {
     "editable": true
    },
@@ -1197,7 +1199,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "189f6827",
+   "id": "349296ad",
    "metadata": {
     "editable": true
    },
@@ -1209,7 +1211,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "d145d77b",
+   "id": "86d19218",
    "metadata": {
     "editable": true
    },
@@ -1221,7 +1223,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "d2c188e3",
+   "id": "5aba4205",
    "metadata": {
     "editable": true
    },
@@ -1235,7 +1237,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "5e4e08b3",
+   "id": "21e2d706",
    "metadata": {
     "editable": true
    },
@@ -1266,7 +1268,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "b5d610f9",
+   "id": "e7f65edd",
    "metadata": {
     "editable": true
    },
@@ -1288,7 +1290,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "d6bfa2a5",
+   "id": "e52e666e",
    "metadata": {
     "editable": true
    },
@@ -1300,7 +1302,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "dff8f227",
+   "id": "35f12e56",
    "metadata": {
     "editable": true
    },
@@ -1313,7 +1315,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "08d29968",
+   "id": "7f26f798",
    "metadata": {
     "editable": true
    },
@@ -1325,7 +1327,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "20600c78",
+   "id": "c8a78f99",
    "metadata": {
     "editable": true
    },
@@ -1337,7 +1339,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "6ff509af",
+   "id": "ad8e843e",
    "metadata": {
     "editable": true
    },
@@ -1349,7 +1351,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "bf860be3",
+   "id": "534a8758",
    "metadata": {
     "editable": true
    },
@@ -1361,7 +1363,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "9ea27c12",
+   "id": "06e92c3e",
    "metadata": {
     "editable": true
    },
@@ -1384,7 +1386,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "5548a408",
+   "id": "3b0536ad",
    "metadata": {
     "editable": true
    },
@@ -1396,7 +1398,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "4bdaa109",
+   "id": "e4ed95ed",
    "metadata": {
     "editable": true
    },
@@ -1409,7 +1411,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "52d62b74",
+   "id": "bfc17c29",
    "metadata": {
     "editable": true
    },
@@ -1421,7 +1423,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "9cb00279",
+   "id": "d92481fd",
    "metadata": {
     "editable": true
    },
@@ -1433,7 +1435,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "26afb900",
+   "id": "ee3de12e",
    "metadata": {
     "editable": true
    },
@@ -1445,7 +1447,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "da41b50e",
+   "id": "e94d68c8",
    "metadata": {
     "editable": true
    },
@@ -1456,7 +1458,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "7719498b",
+   "id": "c463cf84",
    "metadata": {
     "editable": true
    },
@@ -1468,7 +1470,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "f43bef91",
+   "id": "7787fd0d",
    "metadata": {
     "editable": true
    },
@@ -1479,7 +1481,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "d8c9aff8",
+   "id": "3ac590b8",
    "metadata": {
     "editable": true
    },
@@ -1491,7 +1493,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "bdb01c2a",
+   "id": "4a51a588",
    "metadata": {
     "editable": true
    },
@@ -1501,7 +1503,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "679bc6f9",
+   "id": "1691757c",
    "metadata": {
     "editable": true
    },
@@ -1532,7 +1534,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "bde130e7",
+   "id": "8e2f5b79",
    "metadata": {
     "editable": true
    },
@@ -1544,7 +1546,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "feac486a",
+   "id": "3b28ec59",
    "metadata": {
     "editable": true
    },
@@ -1556,7 +1558,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "ad8049ca",
+   "id": "9766c677",
    "metadata": {
     "editable": true
    },
@@ -1566,7 +1568,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "14dd5b9e",
+   "id": "efd5b977",
    "metadata": {
     "editable": true
    },
@@ -1578,7 +1580,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "2f42fa20",
+   "id": "fb90dc2d",
    "metadata": {
     "editable": true
    },
@@ -1588,7 +1590,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "0484474c",
+   "id": "cc0b3bc4",
    "metadata": {
     "editable": true
    },
@@ -1600,7 +1602,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "6517f251",
+   "id": "bb3f22e3",
    "metadata": {
     "editable": true
    },
@@ -1610,7 +1612,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "0238ae3e",
+   "id": "cc31120a",
    "metadata": {
     "editable": true
    },
@@ -1622,7 +1624,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "f829d004",
+   "id": "3f3d5d71",
    "metadata": {
     "editable": true
    },
@@ -1632,7 +1634,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "6c68ecfe",
+   "id": "3e1b44bb",
    "metadata": {
     "editable": true
    },
@@ -1652,7 +1654,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "0342e437",
+   "id": "c0111522",
    "metadata": {
     "editable": true
    },
@@ -1664,7 +1666,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "ab4bc57a",
+   "id": "99f7d382",
    "metadata": {
     "editable": true
    },
@@ -1674,7 +1676,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "a67bcf0c",
+   "id": "c24b7989",
    "metadata": {
     "editable": true
    },
@@ -1686,7 +1688,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "2b549c11",
+   "id": "0e63a0ea",
    "metadata": {
     "editable": true
    },
@@ -1698,7 +1700,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "b572a768",
+   "id": "d01f8997",
    "metadata": {
     "editable": true
    },
@@ -1710,7 +1712,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "438ce1e4",
+   "id": "d439bb3d",
    "metadata": {
     "editable": true
    },
@@ -1722,7 +1724,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "85b16691",
+   "id": "45664795",
    "metadata": {
     "editable": true
    },
@@ -1734,7 +1736,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "a01bf532",
+   "id": "2b7883ff",
    "metadata": {
     "editable": true
    },
@@ -1746,7 +1748,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "ba71fce0",
+   "id": "7b1b49c9",
    "metadata": {
     "editable": true
    },
@@ -1758,7 +1760,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "e49e52c9",
+   "id": "9690a4ac",
    "metadata": {
     "editable": true
    },
@@ -1770,7 +1772,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "fcae9855",
+   "id": "76e3a65e",
    "metadata": {
     "editable": true
    },
@@ -1780,7 +1782,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "b9152eec",
+   "id": "5aefa2c7",
    "metadata": {
     "editable": true
    },
@@ -1792,7 +1794,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "42302594",
+   "id": "3252b61c",
    "metadata": {
     "editable": true
    },
@@ -1802,7 +1804,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "376c25b8",
+   "id": "96d0ef1f",
    "metadata": {
     "editable": true
    },
@@ -1821,7 +1823,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "724ee74e",
+   "id": "a4250df4",
    "metadata": {
     "editable": true
    },
@@ -1842,7 +1844,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "f655ed47",
+   "id": "e160c63c",
    "metadata": {
     "editable": true
    },
@@ -1854,7 +1856,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "f34f4249",
+   "id": "117b8335",
    "metadata": {
     "editable": true
    },
@@ -1865,7 +1867,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "0cd4faab",
+   "id": "bfcee4fc",
    "metadata": {
     "editable": true
    },
@@ -1878,7 +1880,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "8c12d2ed",
+   "id": "e99a4226",
    "metadata": {
     "editable": true
    },
@@ -1890,7 +1892,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "4db8a637",
+   "id": "2fc074fe",
    "metadata": {
     "editable": true
    },
@@ -1900,7 +1902,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "e29462d1",
+   "id": "3b7ff730",
    "metadata": {
     "editable": true
    },
@@ -1912,7 +1914,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "b17d001a",
+   "id": "575abc7a",
    "metadata": {
     "editable": true
    },
@@ -1922,7 +1924,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "e923ab3c",
+   "id": "29cabf38",
    "metadata": {
     "editable": true
    },
@@ -1934,7 +1936,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "debb0024",
+   "id": "24346d8a",
    "metadata": {
     "editable": true
    },
@@ -1944,7 +1946,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "f62723b0",
+   "id": "c41e14cc",
    "metadata": {
     "editable": true
    },
@@ -1958,7 +1960,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "f7371f10",
+   "id": "ca947927",
    "metadata": {
     "editable": true
    },
@@ -1970,7 +1972,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "7a21e500",
+   "id": "76e24b45",
    "metadata": {
     "editable": true
    },
@@ -1980,7 +1982,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "6dd4a97e",
+   "id": "ba01016e",
    "metadata": {
     "editable": true
    },
@@ -1992,7 +1994,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "90d532d6",
+   "id": "533d2d8f",
    "metadata": {
     "editable": true
    },
@@ -2002,7 +2004,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "320c6012",
+   "id": "c77f0b4c",
    "metadata": {
     "editable": true
    },
@@ -2014,7 +2016,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "d80e04f2",
+   "id": "317fabc0",
    "metadata": {
     "editable": true
    },
@@ -2024,7 +2026,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "ded985c4",
+   "id": "6dff410f",
    "metadata": {
     "editable": true
    },
@@ -2036,7 +2038,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "c7b32590",
+   "id": "90a0daa7",
    "metadata": {
     "editable": true
    },
@@ -2046,7 +2048,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "234af442",
+   "id": "e84dfb5c",
    "metadata": {
     "editable": true
    },
@@ -2062,7 +2064,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "2dfde9e5",
+   "id": "3782f5b5",
    "metadata": {
     "editable": true
    },
@@ -2074,7 +2076,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "86074376",
+   "id": "55d714fe",
    "metadata": {
     "editable": true
    },
@@ -2084,7 +2086,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "269ca6a0",
+   "id": "f511ff90",
    "metadata": {
     "editable": true
    },
@@ -2096,7 +2098,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "c11f088c",
+   "id": "b8417bc0",
    "metadata": {
     "editable": true
    },
@@ -2109,7 +2111,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "e3dfd57a",
+   "id": "daecfc51",
    "metadata": {
     "editable": true
    },
@@ -2121,7 +2123,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "75069581",
+   "id": "bb35670d",
    "metadata": {
     "editable": true
    },
@@ -2131,7 +2133,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "b68431fc",
+   "id": "8f7a5794",
    "metadata": {
     "editable": true
    },
@@ -2143,7 +2145,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "d98b69bf",
+   "id": "cb2e57bb",
    "metadata": {
     "editable": true
    },
@@ -2153,7 +2155,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "a09d696d",
+   "id": "518a3a7b",
    "metadata": {
     "editable": true
    },
@@ -2165,7 +2167,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "e88b5d96",
+   "id": "b167ccb4",
    "metadata": {
     "editable": true
    },
@@ -2177,7 +2179,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "95f30084",
+   "id": "ed54256b",
    "metadata": {
     "editable": true
    },
@@ -2187,7 +2189,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "e6b5f3a5",
+   "id": "5e0bf4d5",
    "metadata": {
     "editable": true
    },
@@ -2199,7 +2201,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "6beb7fe2",
+   "id": "434cea12",
    "metadata": {
     "editable": true
    },
@@ -2211,7 +2213,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "ae55d2b3",
+   "id": "c3e84fef",
    "metadata": {
     "editable": true
    },
@@ -2223,7 +2225,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "b64fe3bf",
+   "id": "54be2ce0",
    "metadata": {
     "editable": true
    },
@@ -2233,7 +2235,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "127a43b6",
+   "id": "99fd42d9",
    "metadata": {
     "editable": true
    },
@@ -2245,7 +2247,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "8e5662a1",
+   "id": "1bc32efb",
    "metadata": {
     "editable": true
    },
@@ -2255,7 +2257,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "32e29846",
+   "id": "2e308178",
    "metadata": {
     "editable": true
    },
@@ -2267,7 +2269,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "f76c0e33",
+   "id": "21306ea5",
    "metadata": {
     "editable": true
    },
@@ -2279,7 +2281,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "66b8fa8e",
+   "id": "5189cd85",
    "metadata": {
     "editable": true
    },
@@ -2291,7 +2293,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "433240d0",
+   "id": "94d5aa05",
    "metadata": {
     "editable": true
    },
@@ -2301,7 +2303,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "d5600874",
+   "id": "db0f0e65",
    "metadata": {
     "editable": true
    },
@@ -2313,7 +2315,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "85be35c4",
+   "id": "ee475fa9",
    "metadata": {
     "editable": true
    },
@@ -2323,7 +2325,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "ae1743d0",
+   "id": "450245ae",
    "metadata": {
     "editable": true
    },
@@ -2340,7 +2342,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "8632fdab",
+   "id": "867f0cde",
    "metadata": {
     "editable": true
    },
@@ -2350,7 +2352,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "001f688f",
+   "id": "df1e9725",
    "metadata": {
     "editable": true
    },
@@ -2362,7 +2364,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "89f09ada",
+   "id": "e0f1aa23",
    "metadata": {
     "editable": true
    },
@@ -2372,7 +2374,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "f247b99d",
+   "id": "d2ac1571",
    "metadata": {
     "editable": true
    },
@@ -2384,7 +2386,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "b9759ceb",
+   "id": "3c02024c",
    "metadata": {
     "editable": true
    },
@@ -2398,7 +2400,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "9b78b20b",
+   "id": "93394853",
    "metadata": {
     "editable": true
    },
@@ -2410,7 +2412,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "8aa0afb6",
+   "id": "db513b7c",
    "metadata": {
     "editable": true
    },
@@ -2432,7 +2434,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "91cc0736",
+   "id": "b9b8e907",
    "metadata": {
     "editable": true
    },
@@ -2444,7 +2446,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "5e183cb3",
+   "id": "b54d4c9b",
    "metadata": {
     "editable": true
    },
@@ -2459,7 +2461,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "d773d376",
+   "id": "d8ec8098",
    "metadata": {
     "editable": true
    },
@@ -2471,7 +2473,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "995b6807",
+   "id": "71af910c",
    "metadata": {
     "editable": true
    },
@@ -2483,7 +2485,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "be88c78f",
+   "id": "eb027d0b",
    "metadata": {
     "editable": true
    },
@@ -2493,7 +2495,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "a68de77c",
+   "id": "dab6e4b6",
    "metadata": {
     "editable": true
    },
@@ -2505,7 +2507,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "0aacebb0",
+   "id": "3a00b44c",
    "metadata": {
     "editable": true
    },
@@ -2515,7 +2517,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "1d5d147c",
+   "id": "5797f3bb",
    "metadata": {
     "editable": true
    },
@@ -2527,7 +2529,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "47bad16c",
+   "id": "7994f919",
    "metadata": {
     "editable": true
    },
@@ -2537,7 +2539,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "0b4c5d2d",
+   "id": "178208c0",
    "metadata": {
     "editable": true
    },
@@ -2549,7 +2551,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "238703f0",
+   "id": "ec221530",
    "metadata": {
     "editable": true
    },
@@ -2566,7 +2568,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "93b3eb1c",
+   "id": "c95286df",
    "metadata": {
     "editable": true
    },
@@ -2580,7 +2582,7 @@
   {
    "cell_type": "code",
    "execution_count": 6,
-   "id": "d67219fd",
+   "id": "31e05390",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -2594,7 +2596,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "ee1db513",
+   "id": "047e5198",
    "metadata": {
     "editable": true
    },
@@ -2605,7 +2607,7 @@
   {
    "cell_type": "code",
    "execution_count": 7,
-   "id": "b79ef2b0",
+   "id": "28e16446",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -2645,7 +2647,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "4f696bf3",
+   "id": "ab250c8a",
    "metadata": {
     "editable": true
    },
@@ -2665,7 +2667,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "8fede7c1",
+   "id": "9bb6c485",
    "metadata": {
     "editable": true
    },
@@ -2677,7 +2679,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "0929ddbe",
+   "id": "a9f6cf86",
    "metadata": {
     "editable": true
    },
@@ -2688,7 +2690,7 @@
   {
    "cell_type": "code",
    "execution_count": 8,
-   "id": "7656d012",
+   "id": "89041d08",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -2722,7 +2724,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "fa3121d3",
+   "id": "687b3def",
    "metadata": {
     "editable": true
    },
@@ -2732,7 +2734,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "b543469e",
+   "id": "89227bc8",
    "metadata": {
     "editable": true
    },
@@ -2745,7 +2747,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "8a946491",
+   "id": "136b9b92",
    "metadata": {
     "editable": true
    },
@@ -2757,7 +2759,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "039edb17",
+   "id": "1913c0f2",
    "metadata": {
     "editable": true
    },
@@ -2767,7 +2769,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "939dd966",
+   "id": "4f8ffde8",
    "metadata": {
     "editable": true
    },
@@ -2780,7 +2782,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "32b81bbc",
+   "id": "4505fa5e",
    "metadata": {
     "editable": true
    },
@@ -2790,7 +2792,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "b554e41f",
+   "id": "0a6c5509",
    "metadata": {
     "editable": true
    },
@@ -2802,7 +2804,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "e7a6391a",
+   "id": "48a33008",
    "metadata": {
     "editable": true
    },
@@ -2817,7 +2819,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "8a9dd479",
+   "id": "b014f4e3",
    "metadata": {
     "editable": true
    },
@@ -2830,7 +2832,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "d89b0b9c",
+   "id": "0198f19e",
    "metadata": {
     "editable": true
    },
@@ -2844,7 +2846,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "88b4c066",
+   "id": "3e757a9a",
    "metadata": {
     "editable": true
    },
@@ -2856,7 +2858,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "91069991",
+   "id": "906bcc57",
    "metadata": {
     "editable": true
    },
@@ -2866,7 +2868,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "5abe220a",
+   "id": "51457f7b",
    "metadata": {
     "editable": true
    },
@@ -2879,7 +2881,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "8446a073",
+   "id": "500c7869",
    "metadata": {
     "editable": true
    },
@@ -2891,7 +2893,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "56c7a78e",
+   "id": "4b8b6dd8",
    "metadata": {
     "editable": true
    },
@@ -2903,7 +2905,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "0087d03a",
+   "id": "ea87b059",
    "metadata": {
     "editable": true
    },
@@ -2915,7 +2917,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "f9e2d48e",
+   "id": "485ca7eb",
    "metadata": {
     "editable": true
    },
@@ -2927,7 +2929,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "5fe2a8df",
+   "id": "7c7dfa11",
    "metadata": {
     "editable": true
    },
@@ -2941,7 +2943,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "dea28fba",
+   "id": "ad82b6b1",
    "metadata": {
     "editable": true
    },
@@ -2953,7 +2955,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "bf9a8345",
+   "id": "7f3b9556",
    "metadata": {
     "editable": true
    },
@@ -2963,7 +2965,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "c71edcd0",
+   "id": "9e1f1064",
    "metadata": {
     "editable": true
    },
@@ -2975,7 +2977,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "a5d23794",
+   "id": "c5eab147",
    "metadata": {
     "editable": true
    },
@@ -2985,7 +2987,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "50df7fb3",
+   "id": "f4893c8d",
    "metadata": {
     "editable": true
    },
@@ -2997,7 +2999,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "0c270857",
+   "id": "a839d50c",
    "metadata": {
     "editable": true
    },
@@ -3009,7 +3011,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "e176913b",
+   "id": "da28c789",
    "metadata": {
     "editable": true
    },
@@ -3019,7 +3021,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "95503781",
+   "id": "f0594a1e",
    "metadata": {
     "editable": true
    },
@@ -3030,7 +3032,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "085a7886",
+   "id": "8536a6b6",
    "metadata": {
     "editable": true
    },
@@ -3042,7 +3044,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "c45cb7e8",
+   "id": "e55e2482",
    "metadata": {
     "editable": true
    },
@@ -3058,7 +3060,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "98237c0b",
+   "id": "ada01eee",
    "metadata": {
     "editable": true
    },
@@ -3071,7 +3073,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "9adbd131",
+   "id": "87379b28",
    "metadata": {
     "editable": true
    },
@@ -3083,7 +3085,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "e0fc7e75",
+   "id": "f14ab6f6",
    "metadata": {
     "editable": true
    },
@@ -3093,7 +3095,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "beeed609",
+   "id": "6ae95172",
    "metadata": {
     "editable": true
    },
@@ -3105,7 +3107,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "1ec8688d",
+   "id": "63b0d549",
    "metadata": {
     "editable": true
    },
@@ -3115,7 +3117,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "e0e32455",
+   "id": "36d01c5f",
    "metadata": {
     "editable": true
    },
@@ -3127,7 +3129,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "d418a099",
+   "id": "1dd9edd5",
    "metadata": {
     "editable": true
    },
@@ -3139,7 +3141,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "8dd109b0",
+   "id": "890199e4",
    "metadata": {
     "editable": true
    },
@@ -3155,7 +3157,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "32acbbe9",
+   "id": "2b09c6db",
    "metadata": {
     "editable": true
    },
@@ -3167,7 +3169,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "3bb2e7d3",
+   "id": "98c60b6b",
    "metadata": {
     "editable": true
    },
@@ -3179,7 +3181,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "92b9e986",
+   "id": "107fa6d1",
    "metadata": {
     "editable": true
    },
@@ -3189,7 +3191,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "0f66a3e7",
+   "id": "d5369928",
    "metadata": {
     "editable": true
    },
@@ -3201,7 +3203,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "337d6138",
+   "id": "f7bf0b43",
    "metadata": {
     "editable": true
    },
@@ -3211,7 +3213,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "94020497",
+   "id": "9245fb55",
    "metadata": {
     "editable": true
    },
@@ -3223,7 +3225,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "3c1f2724",
+   "id": "70a95d10",
    "metadata": {
     "editable": true
    },
@@ -3240,7 +3242,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "f522846c",
+   "id": "150ab626",
    "metadata": {
     "editable": true
    },
@@ -3252,7 +3254,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "f37b7397",
+   "id": "d23b7595",
    "metadata": {
     "editable": true
    },
@@ -3264,7 +3266,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "38a6da03",
+   "id": "3a5c0df5",
    "metadata": {
     "editable": true
    },
@@ -3274,7 +3276,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "b733ca2b",
+   "id": "86dbd4ca",
    "metadata": {
     "editable": true
    },
@@ -3286,7 +3288,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "ca889f91",
+   "id": "020324b1",
    "metadata": {
     "editable": true
    },
@@ -3296,7 +3298,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "1d0e3071",
+   "id": "3f4bf2c6",
    "metadata": {
     "editable": true
    },
@@ -3308,7 +3310,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "6ad964aa",
+   "id": "ee5c365e",
    "metadata": {
     "editable": true
    },
@@ -3318,7 +3320,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "52eb19d8",
+   "id": "ec165c89",
    "metadata": {
     "editable": true
    },
@@ -3330,7 +3332,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "a34076ac",
+   "id": "1cb02d59",
    "metadata": {
     "editable": true
    },
@@ -3340,7 +3342,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "530c29ac",
+   "id": "2c370b21",
    "metadata": {
     "editable": true
    },
@@ -3355,7 +3357,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "b8099a77",
+   "id": "95439dc3",
    "metadata": {
     "editable": true
    },
@@ -3367,7 +3369,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "d4dfc8cc",
+   "id": "adb4b006",
    "metadata": {
     "editable": true
    },
@@ -3377,7 +3379,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "bf7253d4",
+   "id": "c9eee2d7",
    "metadata": {
     "editable": true
    },
@@ -3389,7 +3391,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "c0b7c255",
+   "id": "94d48094",
    "metadata": {
     "editable": true
    },
@@ -3401,7 +3403,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "2546602c",
+   "id": "94cae7a5",
    "metadata": {
     "editable": true
    },
@@ -3413,7 +3415,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "c8b454a8",
+   "id": "689226d6",
    "metadata": {
     "editable": true
    },
@@ -3423,7 +3425,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "f1dffbcb",
+   "id": "638c940e",
    "metadata": {
     "editable": true
    },
@@ -3435,7 +3437,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "14db4fe1",
+   "id": "d4db6143",
    "metadata": {
     "editable": true
    },
@@ -3447,7 +3449,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "5840fc8f",
+   "id": "21090e29",
    "metadata": {
     "editable": true
    },
@@ -3459,7 +3461,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "4a31c8b1",
+   "id": "14ce9d80",
    "metadata": {
     "editable": true
    },
@@ -3469,7 +3471,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "80f5ea6d",
+   "id": "05deeb16",
    "metadata": {
     "editable": true
    },
@@ -3481,7 +3483,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "529ee90c",
+   "id": "02e6d231",
    "metadata": {
     "editable": true
    },
@@ -3491,7 +3493,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "d85cbf9e",
+   "id": "4ae5f511",
    "metadata": {
     "editable": true
    },
@@ -3505,7 +3507,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "e92311d7",
+   "id": "04b5356b",
    "metadata": {
     "editable": true
    },
@@ -3515,7 +3517,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "187085eb",
+   "id": "f6058696",
    "metadata": {
     "editable": true
    },
@@ -3527,7 +3529,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "0eb5679e",
+   "id": "fd7224ad",
    "metadata": {
     "editable": true
    },
@@ -3539,7 +3541,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "3dd86b87",
+   "id": "9718107e",
    "metadata": {
     "editable": true
    },
@@ -3549,7 +3551,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "b9d05ed2",
+   "id": "84d4f6f8",
    "metadata": {
     "editable": true
    },
@@ -3561,7 +3563,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "25c589cd",
+   "id": "cdacd328",
    "metadata": {
     "editable": true
    },
@@ -3571,7 +3573,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "28186058",
+   "id": "2720a679",
    "metadata": {
     "editable": true
    },
@@ -3583,7 +3585,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "8775423c",
+   "id": "cbfdf3c3",
    "metadata": {
     "editable": true
    },
@@ -3595,7 +3597,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "c9d8d70a",
+   "id": "510341f7",
    "metadata": {
     "editable": true
    },
@@ -3605,7 +3607,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "3e7e915b",
+   "id": "dd5b676f",
    "metadata": {
     "editable": true
    },
@@ -3617,7 +3619,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "131eedae",
+   "id": "9bfc451f",
    "metadata": {
     "editable": true
    },
@@ -3627,7 +3629,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "83550688",
+   "id": "63c13f99",
    "metadata": {
     "editable": true
    },
@@ -3639,7 +3641,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "8942f0d0",
+   "id": "e3f87bfd",
    "metadata": {
     "editable": true
    },
@@ -3651,7 +3653,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "ac252166",
+   "id": "e6e1e91a",
    "metadata": {
     "editable": true
    },
@@ -3661,7 +3663,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "21c99ee8",
+   "id": "557183ef",
    "metadata": {
     "editable": true
    },
@@ -3673,7 +3675,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "689ab283",
+   "id": "390e51d7",
    "metadata": {
     "editable": true
    },
@@ -3686,7 +3688,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "5a016164",
+   "id": "b54b06b4",
    "metadata": {
     "editable": true
    },
@@ -3698,7 +3700,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "10278ba8",
+   "id": "7da149de",
    "metadata": {
     "editable": true
    },
@@ -3710,7 +3712,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "ae54d916",
+   "id": "0bbd3f58",
    "metadata": {
     "editable": true
    },
@@ -3722,7 +3724,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "b70fda3d",
+   "id": "c2f0aad9",
    "metadata": {
     "editable": true
    },
@@ -3732,7 +3734,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "66e0f54b",
+   "id": "fa8ed1a0",
    "metadata": {
     "editable": true
    },
@@ -3744,7 +3746,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "a2d10e26",
+   "id": "e50fb0cc",
    "metadata": {
     "editable": true
    },
@@ -3754,7 +3756,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "dce25955",
+   "id": "c698a54a",
    "metadata": {
     "editable": true
    },
@@ -3766,7 +3768,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "28493542",
+   "id": "602f6914",
    "metadata": {
     "editable": true
    },
@@ -3776,7 +3778,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "442d0da6",
+   "id": "39842e84",
    "metadata": {
     "editable": true
    },
@@ -3788,7 +3790,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "c7d85d08",
+   "id": "c104d1e6",
    "metadata": {
     "editable": true
    },
@@ -3798,7 +3800,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "d944ea22",
+   "id": "45ee50f8",
    "metadata": {
     "editable": true
    },
@@ -3811,7 +3813,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "b93efc0c",
+   "id": "3acea8be",
    "metadata": {
     "editable": true
    },
@@ -3823,7 +3825,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "418813a2",
+   "id": "05712174",
    "metadata": {
     "editable": true
    },
@@ -3835,7 +3837,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "486f3909",
+   "id": "d22badc2",
    "metadata": {
     "editable": true
    },
@@ -3845,7 +3847,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "cf29a145",
+   "id": "16ef5fdd",
    "metadata": {
     "editable": true
    },
@@ -3857,7 +3859,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "4e0a8c90",
+   "id": "3ab4fe20",
    "metadata": {
     "editable": true
    },
@@ -3874,7 +3876,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "d2cbf9b9",
+   "id": "cc1a051d",
    "metadata": {
     "editable": true
    },
@@ -3886,7 +3888,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "c820e33a",
+   "id": "3141a93e",
    "metadata": {
     "editable": true
    },
@@ -3898,7 +3900,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "2962087b",
+   "id": "a1235766",
    "metadata": {
     "editable": true
    },
@@ -3908,7 +3910,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "10230128",
+   "id": "4d8d1888",
    "metadata": {
     "editable": true
    },
@@ -3920,7 +3922,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "a7f4bdaa",
+   "id": "5b15d66a",
    "metadata": {
     "editable": true
    },
@@ -3930,7 +3932,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "658eb8ac",
+   "id": "bf79635f",
    "metadata": {
     "editable": true
    },
@@ -3942,7 +3944,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "57ebdef8",
+   "id": "b0d0e8dd",
    "metadata": {
     "editable": true
    },
@@ -3952,7 +3954,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "030eb562",
+   "id": "73f5e4e8",
    "metadata": {
     "editable": true
    },
@@ -3964,7 +3966,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "954ff0c5",
+   "id": "9d86a2d4",
    "metadata": {
     "editable": true
    },
@@ -3974,7 +3976,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "1d489a2a",
+   "id": "a4439103",
    "metadata": {
     "editable": true
    },
@@ -3989,7 +3991,7 @@
   {
    "cell_type": "code",
    "execution_count": 9,
-   "id": "9e04847f",
+   "id": "3d93a407",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -4049,7 +4051,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "ad6af984",
+   "id": "c0575e49",
    "metadata": {
     "editable": true
    },
@@ -4059,7 +4061,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "26f1c1eb",
+   "id": "057e2229",
    "metadata": {
     "editable": true
    },
@@ -4070,7 +4072,7 @@
   {
    "cell_type": "code",
    "execution_count": 10,
-   "id": "6c6d1284",
+   "id": "be43dd02",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -4137,7 +4139,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "ee356a3b",
+   "id": "88dc1ccb",
    "metadata": {
     "editable": true
    },
@@ -4148,7 +4150,7 @@
   {
    "cell_type": "code",
    "execution_count": 11,
-   "id": "246b382a",
+   "id": "861be69b",
    "metadata": {
     "collapsed": false,
     "editable": true
diff --git a/doc/src/week36/week36.do.txt b/doc/src/week36/week36.do.txt
index 64d4401eb..92d5cf239 100644
--- a/doc/src/week36/week36.do.txt
+++ b/doc/src/week36/week36.do.txt
@@ -1,4 +1,4 @@
-TITLE: Week 36: Linear Rgeression and Statistical interpretations
+TITLE: Week 36: Linear Regression and Statistical interpretations
 AUTHOR: Morten Hjorth-Jensen {copyright, 1999-present|CC BY-NC} at Department of Physics, University of Oslo & Department of Physics and Astronomy and National Superconducting Cyclotron Laboratory, Michigan State University
 DATE: September 2-6, 2024
 
@@ -61,6 +61,8 @@ If you need to scale the data, not doing so will give an *unfair*
 penalization of the parameters since their magnitude depends on the
 scale of their corresponding predictor.
 
+The _Scikit-Learn_ site URL:"https://scikit-learn.org/stable/auto_examples/preprocessing/plot_all_scaling.html#plot-all-scaling-standard-scaler-section" has a good discussion of different ways of preprocessing data.
+
 Suppose as an example that you 
 you have an input variable given by the heights of different persons.
 Human height might be measured in inches or meters or
@@ -293,7 +295,7 @@ beta = fit_beta(X - X_offset, y - y_offset)
 intercept = np.mean(y_offset - X_offset @ beta)
 
 print(f"Manual intercept: {intercept}")
-print(f"Fitted beta (wiothout intercept): {beta}")
+print(f"Fitted beta (without intercept): {beta}")
 print(f"Sklearn intercept: {skl.intercept_}")
 print(f"Sklearn fitted beta (without intercept): {skl.coef_}")
 ypredictOwn = X @ beta