From 4be6ad557e3a51192eb9022cd569656ff8f14a96 Mon Sep 17 00:00:00 2001
From: Morten Hjorth-Jensen <morten.hjorth-jensen@fys.uio.no>
Date: Fri, 16 Sep 2022 04:58:03 +0200
Subject: [PATCH] update

---
 doc/pub/week37/html/._week37-bs000.html      |   2 +-
 doc/pub/week37/html/._week37-bs023.html      |   2 +-
 doc/pub/week37/html/week37-bs.html           |   2 +-
 doc/pub/week37/html/week37-reveal.html       |   4 +-
 doc/pub/week37/html/week37-solarized.html    |   4 +-
 doc/pub/week37/html/week37.html              |   4 +-
 doc/pub/week37/ipynb/ipynb-week37-src.tar.gz | Bin 1022692 -> 1022692 bytes
 doc/pub/week37/ipynb/week37.ipynb            | 296 +++++++++----------
 doc/src/week37/week37.do.txt                 |   2 +-
 9 files changed, 158 insertions(+), 158 deletions(-)

diff --git a/doc/pub/week37/html/._week37-bs000.html b/doc/pub/week37/html/._week37-bs000.html
index 3fbf64644..da2d4f749 100644
--- a/doc/pub/week37/html/._week37-bs000.html
+++ b/doc/pub/week37/html/._week37-bs000.html
@@ -284,7 +284,7 @@ MathJax.Hub.Config({
 </center>
 <br>
 <center>
-<h4>Sep 15, 2022</h4>
+<h4>Sep 16, 2022</h4>
 </center> <!-- date -->
 <br>
 
diff --git a/doc/pub/week37/html/._week37-bs023.html b/doc/pub/week37/html/._week37-bs023.html
index cde9ffc08..65a9c40c9 100644
--- a/doc/pub/week37/html/._week37-bs023.html
+++ b/doc/pub/week37/html/._week37-bs023.html
@@ -270,7 +270,7 @@ MathJax.Hub.Config({
 <div class="panel panel-default">
 <div class="panel-body">
 <!-- subsequent paragraphs come in larger fonts, so start with a paragraph -->
-<p>Bootstrapping is a non-parametric approach to statistical inference
+<p>Bootstrapping is a <a href="https://en.wikipedia.org/wiki/Nonparametric_statistics" target="_self">non-parametric approach</a> to statistical inference
 that substitutes computation for more traditional distributional
 assumptions and asymptotic results. Bootstrapping offers a number of
 advantages: 
diff --git a/doc/pub/week37/html/week37-bs.html b/doc/pub/week37/html/week37-bs.html
index 3fbf64644..da2d4f749 100644
--- a/doc/pub/week37/html/week37-bs.html
+++ b/doc/pub/week37/html/week37-bs.html
@@ -284,7 +284,7 @@ MathJax.Hub.Config({
 </center>
 <br>
 <center>
-<h4>Sep 15, 2022</h4>
+<h4>Sep 16, 2022</h4>
 </center> <!-- date -->
 <br>
 
diff --git a/doc/pub/week37/html/week37-reveal.html b/doc/pub/week37/html/week37-reveal.html
index f41ab22e6..78ebcf348 100644
--- a/doc/pub/week37/html/week37-reveal.html
+++ b/doc/pub/week37/html/week37-reveal.html
@@ -184,7 +184,7 @@ MathJax.Hub.Config({
 </center>
 <br>
 <center>
-<h4>Sep 15, 2022</h4>
+<h4>Sep 16, 2022</h4>
 </center> <!-- date -->
 <br>
 
@@ -925,7 +925,7 @@ t = jackknife(x, stat)
 <div class="alert alert-block alert-block alert-text-normal">
 <b></b>
 <p>
-<p>Bootstrapping is a non-parametric approach to statistical inference
+<p>Bootstrapping is a <a href="https://en.wikipedia.org/wiki/Nonparametric_statistics" target="_blank">non-parametric approach</a> to statistical inference
 that substitutes computation for more traditional distributional
 assumptions and asymptotic results. Bootstrapping offers a number of
 advantages: 
diff --git a/doc/pub/week37/html/week37-solarized.html b/doc/pub/week37/html/week37-solarized.html
index 3cfb866c5..16a667595 100644
--- a/doc/pub/week37/html/week37-solarized.html
+++ b/doc/pub/week37/html/week37-solarized.html
@@ -237,7 +237,7 @@ MathJax.Hub.Config({
 </center>
 <br>
 <center>
-<h4>Sep 15, 2022</h4>
+<h4>Sep 16, 2022</h4>
 </center> <!-- date -->
 <br>
 
@@ -900,7 +900,7 @@ t = jackknife(x, stat)
 <div class="alert alert-block alert-block alert-text-normal">
 <b></b>
 <p>
-<p>Bootstrapping is a non-parametric approach to statistical inference
+<p>Bootstrapping is a <a href="https://en.wikipedia.org/wiki/Nonparametric_statistics" target="_blank">non-parametric approach</a> to statistical inference
 that substitutes computation for more traditional distributional
 assumptions and asymptotic results. Bootstrapping offers a number of
 advantages: 
diff --git a/doc/pub/week37/html/week37.html b/doc/pub/week37/html/week37.html
index 35050f8ae..55a92ad81 100644
--- a/doc/pub/week37/html/week37.html
+++ b/doc/pub/week37/html/week37.html
@@ -314,7 +314,7 @@ MathJax.Hub.Config({
 </center>
 <br>
 <center>
-<h4>Sep 15, 2022</h4>
+<h4>Sep 16, 2022</h4>
 </center> <!-- date -->
 <br>
 
@@ -977,7 +977,7 @@ t <span style="color: #666666">=</span> jackknife(x, stat)
 <div class="alert alert-block alert-block alert-text-normal">
 <b></b>
 <p>
-<p>Bootstrapping is a non-parametric approach to statistical inference
+<p>Bootstrapping is a <a href="https://en.wikipedia.org/wiki/Nonparametric_statistics" target="_blank">non-parametric approach</a> to statistical inference
 that substitutes computation for more traditional distributional
 assumptions and asymptotic results. Bootstrapping offers a number of
 advantages: 
diff --git a/doc/pub/week37/ipynb/ipynb-week37-src.tar.gz b/doc/pub/week37/ipynb/ipynb-week37-src.tar.gz
index eb3140bad03d675a0b0ec67b37966a72375df2d2..f57b9959cb5573c1066796817197ef81ab15ccc1 100644
GIT binary patch
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diff --git a/doc/pub/week37/ipynb/week37.ipynb b/doc/pub/week37/ipynb/week37.ipynb
index a983c3a52..f4141f747 100644
--- a/doc/pub/week37/ipynb/week37.ipynb
+++ b/doc/pub/week37/ipynb/week37.ipynb
@@ -2,7 +2,7 @@
  "cells": [
   {
    "cell_type": "markdown",
-   "id": "aa1d6219",
+   "id": "46a56d46",
    "metadata": {
     "editable": true
    },
@@ -14,7 +14,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "5d96c643",
+   "id": "1374b1a3",
    "metadata": {
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@@ -22,14 +22,14 @@
     "# Week 37: Summary of Ridge and Lasso Regression and Resampling Methods\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: **Sep 15, 2022**\n",
+    "Date: **Sep 16, 2022**\n",
     "\n",
     "Copyright 1999-2022, Morten Hjorth-Jensen. Released under CC Attribution-NonCommercial 4.0 license"
    ]
   },
   {
    "cell_type": "markdown",
-   "id": "b2d8af1c",
+   "id": "adea2cb5",
    "metadata": {
     "editable": true
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@@ -54,7 +54,7 @@
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-   "id": "91b05bea",
+   "id": "cd6f0fc8",
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@@ -64,7 +64,7 @@
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   {
    "cell_type": "markdown",
-   "id": "d12c30b9",
+   "id": "d26e4f99",
    "metadata": {
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@@ -87,7 +87,7 @@
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-   "id": "a95be908",
+   "id": "80fe5a22",
    "metadata": {
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@@ -99,7 +99,7 @@
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-   "id": "737bd5f0",
+   "id": "5c8cb124",
    "metadata": {
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@@ -112,7 +112,7 @@
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   {
    "cell_type": "markdown",
-   "id": "0588eb02",
+   "id": "2808584f",
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@@ -124,7 +124,7 @@
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-   "id": "4853f405",
+   "id": "29c2bed5",
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@@ -136,7 +136,7 @@
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+   "id": "f938df4d",
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@@ -148,7 +148,7 @@
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-   "id": "57ea7b5a",
+   "id": "ad7010d2",
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@@ -159,7 +159,7 @@
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+   "id": "ed4b769b",
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@@ -171,7 +171,7 @@
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-   "id": "327188ab",
+   "id": "d9becfab",
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@@ -182,7 +182,7 @@
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-   "id": "5970038a",
+   "id": "e62c9581",
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@@ -194,7 +194,7 @@
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@@ -204,7 +204,7 @@
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+   "id": "6ea3d7d4",
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@@ -235,7 +235,7 @@
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+   "id": "7b8757e3",
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@@ -247,7 +247,7 @@
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+   "id": "eff9048e",
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@@ -259,7 +259,7 @@
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+   "id": "6d2f1455",
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@@ -269,7 +269,7 @@
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+   "id": "4d8f2d17",
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@@ -281,7 +281,7 @@
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+   "id": "4df87281",
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@@ -291,7 +291,7 @@
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-   "id": "28c5bb96",
+   "id": "ce2f3f73",
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@@ -303,7 +303,7 @@
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+   "id": "e1335340",
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@@ -313,7 +313,7 @@
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+   "id": "77692e9c",
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@@ -325,7 +325,7 @@
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+   "id": "a4324010",
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@@ -337,7 +337,7 @@
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-   "id": "315d6bad",
+   "id": "8ac372df",
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@@ -349,7 +349,7 @@
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+   "id": "4337f8ef",
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@@ -359,7 +359,7 @@
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+   "id": "d3d7044f",
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@@ -371,7 +371,7 @@
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@@ -381,7 +381,7 @@
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+   "id": "017b52d8",
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@@ -398,7 +398,7 @@
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+   "id": "7d8cea93",
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@@ -417,7 +417,7 @@
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    "execution_count": 1,
-   "id": "4b7141a3",
+   "id": "2b7bf883",
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@@ -493,7 +493,7 @@
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-   "id": "926963be",
+   "id": "7c5bb3a1",
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@@ -503,7 +503,7 @@
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+   "id": "58678f3b",
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@@ -533,7 +533,7 @@
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-   "id": "4611f47e",
+   "id": "f1c6b3a0",
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@@ -582,7 +582,7 @@
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@@ -596,7 +596,7 @@
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+   "id": "6f42d972",
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@@ -608,7 +608,7 @@
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@@ -618,7 +618,7 @@
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@@ -630,7 +630,7 @@
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@@ -640,7 +640,7 @@
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@@ -652,7 +652,7 @@
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@@ -662,7 +662,7 @@
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@@ -684,7 +684,7 @@
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@@ -700,7 +700,7 @@
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@@ -712,7 +712,7 @@
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@@ -734,7 +734,7 @@
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@@ -759,7 +759,7 @@
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@@ -769,7 +769,7 @@
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@@ -781,7 +781,7 @@
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+   "id": "d02408b2",
    "metadata": {
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@@ -1107,7 +1107,7 @@
   {
    "cell_type": "code",
    "execution_count": 3,
-   "id": "b4c24093",
+   "id": "3a891372",
    "metadata": {
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     "editable": true
@@ -1146,13 +1146,13 @@
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   {
    "cell_type": "markdown",
-   "id": "5ff29071",
+   "id": "1ddce925",
    "metadata": {
     "editable": true
    },
    "source": [
     "## Resampling methods: Bootstrap\n",
-    "Bootstrapping is a non-parametric approach to statistical inference\n",
+    "Bootstrapping is a [non-parametric approach](https://en.wikipedia.org/wiki/Nonparametric_statistics) to statistical inference\n",
     "that substitutes computation for more traditional distributional\n",
     "assumptions and asymptotic results. Bootstrapping offers a number of\n",
     "advantages: \n",
@@ -1171,7 +1171,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "78c1527f",
+   "id": "ea050093",
    "metadata": {
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@@ -1191,7 +1191,7 @@
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   {
    "cell_type": "markdown",
-   "id": "1f0f6914",
+   "id": "9ca353a6",
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@@ -1203,7 +1203,7 @@
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   {
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-   "id": "e8eab887",
+   "id": "faffed3e",
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@@ -1213,7 +1213,7 @@
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   {
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-   "id": "ca11b9a2",
+   "id": "df354ebd",
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@@ -1228,7 +1228,7 @@
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   {
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-   "id": "95c2cfcd",
+   "id": "465f4589",
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@@ -1241,7 +1241,7 @@
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   {
    "cell_type": "markdown",
-   "id": "49d12f14",
+   "id": "1530ff70",
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@@ -1254,7 +1254,7 @@
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   {
    "cell_type": "markdown",
-   "id": "c9557584",
+   "id": "742c74c1",
    "metadata": {
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@@ -1266,7 +1266,7 @@
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   {
    "cell_type": "markdown",
-   "id": "42146bd0",
+   "id": "d8695a18",
    "metadata": {
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@@ -1279,7 +1279,7 @@
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   {
    "cell_type": "markdown",
-   "id": "c643d6a8",
+   "id": "0408f756",
    "metadata": {
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@@ -1290,7 +1290,7 @@
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   {
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-   "id": "2ff1c036",
+   "id": "1f846273",
    "metadata": {
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@@ -1304,7 +1304,7 @@
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   {
    "cell_type": "markdown",
-   "id": "8681f8c5",
+   "id": "39c7e645",
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@@ -1314,7 +1314,7 @@
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   {
    "cell_type": "markdown",
-   "id": "2ccbac31",
+   "id": "df81785c",
    "metadata": {
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@@ -1328,7 +1328,7 @@
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   {
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-   "id": "0ab2b859",
+   "id": "f86ffcb2",
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@@ -1341,7 +1341,7 @@
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   {
    "cell_type": "markdown",
-   "id": "d80f1727",
+   "id": "1ff1512a",
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@@ -1354,7 +1354,7 @@
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   {
    "cell_type": "markdown",
-   "id": "ad8d9495",
+   "id": "553331b0",
    "metadata": {
     "editable": true
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@@ -1364,7 +1364,7 @@
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   {
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+   "id": "cf294174",
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@@ -1377,7 +1377,7 @@
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   {
    "cell_type": "markdown",
-   "id": "067cc1d4",
+   "id": "b175e6bc",
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@@ -1387,7 +1387,7 @@
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   {
    "cell_type": "markdown",
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+   "id": "61fc3205",
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@@ -1400,7 +1400,7 @@
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   {
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-   "id": "599626a6",
+   "id": "0c7f0b49",
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@@ -1412,7 +1412,7 @@
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   {
    "cell_type": "markdown",
-   "id": "982a41f8",
+   "id": "f57be406",
    "metadata": {
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@@ -1431,7 +1431,7 @@
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   {
    "cell_type": "markdown",
-   "id": "2029dfc4",
+   "id": "7000cae7",
    "metadata": {
     "editable": true
    },
@@ -1444,7 +1444,7 @@
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   {
    "cell_type": "markdown",
-   "id": "0d360de2",
+   "id": "0f92a4be",
    "metadata": {
     "editable": true
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@@ -1456,7 +1456,7 @@
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   {
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-   "id": "9f128e08",
+   "id": "8bdf35ca",
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     "editable": true
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@@ -1469,7 +1469,7 @@
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   {
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-   "id": "0d0c3712",
+   "id": "bc04e4d5",
    "metadata": {
     "editable": true
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@@ -1489,7 +1489,7 @@
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   {
    "cell_type": "markdown",
-   "id": "e9ae180b",
+   "id": "7bd03ecd",
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@@ -1512,7 +1512,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "9749e7b1",
+   "id": "62599ed0",
    "metadata": {
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    },
@@ -1527,7 +1527,7 @@
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   {
    "cell_type": "markdown",
-   "id": "39cf550d",
+   "id": "89f67ea8",
    "metadata": {
     "editable": true
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@@ -1539,7 +1539,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "a000c224",
+   "id": "3728d1d6",
    "metadata": {
     "editable": true
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@@ -1559,7 +1559,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "cf3eabf8",
+   "id": "dc9504c8",
    "metadata": {
     "editable": true
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@@ -1579,7 +1579,7 @@
   },
   {
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-   "id": "dd3c9c0b",
+   "id": "f40b4456",
    "metadata": {
     "editable": true
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@@ -1603,7 +1603,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "59136270",
+   "id": "a02150bc",
    "metadata": {
     "editable": true
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@@ -1624,7 +1624,7 @@
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   {
    "cell_type": "markdown",
-   "id": "af6381a5",
+   "id": "bdd0aa8e",
    "metadata": {
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@@ -1654,7 +1654,7 @@
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   {
    "cell_type": "markdown",
-   "id": "dd9ebbdd",
+   "id": "f3a2447b",
    "metadata": {
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@@ -1678,7 +1678,7 @@
   {
    "cell_type": "code",
    "execution_count": 4,
-   "id": "ac82543c",
+   "id": "b72af39d",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -1715,7 +1715,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "e888d377",
+   "id": "5cec1278",
    "metadata": {
     "editable": true
    },
@@ -1725,7 +1725,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "ce043520",
+   "id": "6ce13c1f",
    "metadata": {
     "editable": true
    },
@@ -1736,7 +1736,7 @@
   {
    "cell_type": "code",
    "execution_count": 5,
-   "id": "422bdff8",
+   "id": "afb9a7b9",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -1756,7 +1756,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "7632debf",
+   "id": "27296af0",
    "metadata": {
     "editable": true
    },
@@ -1774,7 +1774,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "c8dcc1f6",
+   "id": "63285cae",
    "metadata": {
     "editable": true
    },
@@ -1786,7 +1786,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "7cb0b65d",
+   "id": "e8d9bfac",
    "metadata": {
     "editable": true
    },
@@ -1803,7 +1803,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "7fd5ac47",
+   "id": "475018c9",
    "metadata": {
     "editable": true
    },
@@ -1815,7 +1815,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "421779b1",
+   "id": "e3ba937e",
    "metadata": {
     "editable": true
    },
@@ -1825,7 +1825,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "361e64cc",
+   "id": "bd90810f",
    "metadata": {
     "editable": true
    },
@@ -1837,7 +1837,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "3d5279ca",
+   "id": "6fbbf603",
    "metadata": {
     "editable": true
    },
@@ -1854,7 +1854,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "20b69951",
+   "id": "f93a7b76",
    "metadata": {
     "editable": true
    },
@@ -1866,7 +1866,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "80050251",
+   "id": "4383ff94",
    "metadata": {
     "editable": true
    },
@@ -1876,7 +1876,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "b4754997",
+   "id": "13a24a44",
    "metadata": {
     "editable": true
    },
@@ -1888,7 +1888,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "b54fba38",
+   "id": "1d8f4bac",
    "metadata": {
     "editable": true
    },
@@ -1898,7 +1898,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "ab83834b",
+   "id": "c81746c2",
    "metadata": {
     "editable": true
    },
@@ -1910,7 +1910,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "a8e9092a",
+   "id": "d8f0280d",
    "metadata": {
     "editable": true
    },
@@ -1920,7 +1920,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "e255eaa2",
+   "id": "10f144d6",
    "metadata": {
     "editable": true
    },
@@ -1936,7 +1936,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "8e2eef3d",
+   "id": "5263329b",
    "metadata": {
     "editable": true
    },
@@ -1947,7 +1947,7 @@
   {
    "cell_type": "code",
    "execution_count": 6,
-   "id": "42218092",
+   "id": "8ed39e71",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -2012,7 +2012,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "8c0d18a3",
+   "id": "f1314787",
    "metadata": {
     "editable": true
    },
@@ -2023,7 +2023,7 @@
   {
    "cell_type": "code",
    "execution_count": 7,
-   "id": "f2bf26b1",
+   "id": "1644013c",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -2080,7 +2080,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "6cf53d46",
+   "id": "46fe59da",
    "metadata": {
     "editable": true
    },
@@ -2118,7 +2118,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "ff2223bc",
+   "id": "a7eac467",
    "metadata": {
     "editable": true
    },
@@ -2129,7 +2129,7 @@
   {
    "cell_type": "code",
    "execution_count": 8,
-   "id": "d9183705",
+   "id": "d55c7ff9",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -2211,7 +2211,7 @@
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   {
    "cell_type": "markdown",
-   "id": "b96fc947",
+   "id": "8a2ad032",
    "metadata": {
     "editable": true
    },
@@ -2236,7 +2236,7 @@
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   {
    "cell_type": "markdown",
-   "id": "2f100afd",
+   "id": "88bfe698",
    "metadata": {
     "editable": true
    },
@@ -2252,7 +2252,7 @@
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   {
    "cell_type": "markdown",
-   "id": "5841b0f3",
+   "id": "c9232a13",
    "metadata": {
     "editable": true
    },
@@ -2268,7 +2268,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "cd0db18d",
+   "id": "be7c88c8",
    "metadata": {
     "editable": true
    },
@@ -2282,7 +2282,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "060dccde",
+   "id": "295c2a92",
    "metadata": {
     "editable": true
    },
@@ -2296,7 +2296,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "58ca801f",
+   "id": "fbd2cfca",
    "metadata": {
     "editable": true
    },
@@ -2324,7 +2324,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "d3803b23",
+   "id": "4d146338",
    "metadata": {
     "editable": true
    },
@@ -2337,7 +2337,7 @@
   {
    "cell_type": "code",
    "execution_count": 9,
-   "id": "c564999e",
+   "id": "fe5ad263",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -2437,7 +2437,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "a24d3935",
+   "id": "7e17054e",
    "metadata": {
     "editable": true
    },
@@ -2448,7 +2448,7 @@
   {
    "cell_type": "code",
    "execution_count": 10,
-   "id": "a832e0a6",
+   "id": "52a4ad07",
    "metadata": {
     "collapsed": false,
     "editable": true
@@ -2537,7 +2537,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "d60df210",
+   "id": "dcb3368e",
    "metadata": {
     "editable": true
    },
@@ -2547,7 +2547,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "4715bd30",
+   "id": "8bc22ff0",
    "metadata": {
     "editable": true
    },
@@ -2560,7 +2560,7 @@
   {
    "cell_type": "code",
    "execution_count": 11,
-   "id": "ebc62d3a",
+   "id": "76ef249b",
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     "editable": true
diff --git a/doc/src/week37/week37.do.txt b/doc/src/week37/week37.do.txt
index 23c764d83..f583c81da 100644
--- a/doc/src/week37/week37.do.txt
+++ b/doc/src/week37/week37.do.txt
@@ -622,7 +622,7 @@ t = jackknife(x, stat)
 !split
 ===== Resampling methods: Bootstrap =====
 !bblock
-Bootstrapping is a non-parametric approach to statistical inference
+Bootstrapping is a "non-parametric approach":"https://en.wikipedia.org/wiki/Nonparametric_statistics" to statistical inference
 that substitutes computation for more traditional distributional
 assumptions and asymptotic results. Bootstrapping offers a number of
 advantages: