rebuild

Author: trevorcampbell

docs/404.html

@@ -26,7 +26,7 @@
 <meta name="author" content="Melissa Lee" />
 
 
-<meta name="date" content="2021-11-18" />
+<meta name="date" content="2021-12-23" />
 
   <meta name="viewport" content="width=device-width, initial-scale=1" />
   <meta name="apple-mobile-web-app-capable" content="yes" />
@@ -173,7 +173,7 @@
 <li class="chapter" data-level="" data-path="index.html"><a href="index.html"><i class="fa fa-check"></i>Preface</a></li>
 <li class="chapter" data-level="" data-path="acknowledgments.html"><a href="acknowledgments.html"><i class="fa fa-check"></i>Acknowledgments</a></li>
 <li class="chapter" data-level="" data-path="about-the-authors.html"><a href="about-the-authors.html"><i class="fa fa-check"></i>About the authors</a></li>
-<li class="chapter" data-level="1" data-path="intro.html"><a href="intro.html"><i class="fa fa-check"></i><b>1</b> R and the tidyverse</a>
+<li class="chapter" data-level="1" data-path="intro.html"><a href="intro.html"><i class="fa fa-check"></i><b>1</b> R and the Tidyverse</a>
 <ul>
 <li class="chapter" data-level="1.1" data-path="intro.html"><a href="intro.html#overview"><i class="fa fa-check"></i><b>1.1</b> Overview</a></li>
 <li class="chapter" data-level="1.2" data-path="intro.html"><a href="intro.html#chapter-learning-objectives"><i class="fa fa-check"></i><b>1.2</b> Chapter learning objectives</a></li>
@@ -266,8 +266,9 @@
 <li class="chapter" data-level="3.9" data-path="wrangling.html"><a href="wrangling.html#aggregating-data-with-summarize-and-map"><i class="fa fa-check"></i><b>3.9</b> Aggregating data with <code>summarize</code> and <code>map</code></a>
 <ul>
 <li class="chapter" data-level="3.9.1" data-path="wrangling.html"><a href="wrangling.html#calculating-summary-statistics-on-whole-columns"><i class="fa fa-check"></i><b>3.9.1</b> Calculating summary statistics on whole columns</a></li>
-<li class="chapter" data-level="3.9.2" data-path="wrangling.html"><a href="wrangling.html#calculating-summary-statistics-for-groups-of-rows"><i class="fa fa-check"></i><b>3.9.2</b> Calculating summary statistics for groups of rows</a></li>
-<li class="chapter" data-level="3.9.3" data-path="wrangling.html"><a href="wrangling.html#calculating-summary-statistics-on-many-columns"><i class="fa fa-check"></i><b>3.9.3</b> Calculating summary statistics on many columns</a></li>
+<li class="chapter" data-level="3.9.2" data-path="wrangling.html"><a href="wrangling.html#calculating-summary-statistics-when-there-are-nas"><i class="fa fa-check"></i><b>3.9.2</b> Calculating summary statistics when there are <code>NA</code>s</a></li>
+<li class="chapter" data-level="3.9.3" data-path="wrangling.html"><a href="wrangling.html#calculating-summary-statistics-for-groups-of-rows"><i class="fa fa-check"></i><b>3.9.3</b> Calculating summary statistics for groups of rows</a></li>
+<li class="chapter" data-level="3.9.4" data-path="wrangling.html"><a href="wrangling.html#calculating-summary-statistics-on-many-columns"><i class="fa fa-check"></i><b>3.9.4</b> Calculating summary statistics on many columns</a></li>
 </ul></li>
 <li class="chapter" data-level="3.10" data-path="wrangling.html"><a href="wrangling.html#apply-functions-across-many-columns-with-mutate-and-across"><i class="fa fa-check"></i><b>3.10</b> Apply functions across many columns with <code>mutate</code> and <code>across</code></a></li>
 <li class="chapter" data-level="3.11" data-path="wrangling.html"><a href="wrangling.html#apply-functions-across-columns-within-one-row-with-rowwise-and-mutate"><i class="fa fa-check"></i><b>3.11</b> Apply functions across columns within one row with <code>rowwise</code> and <code>mutate</code></a></li>