fix incorrect answer for poll and add library example

docs/Intro_to_R_data_analysis_part_1.html

@@ -2753,7 +2753,7 @@ one style of names</li>
 <li>cat_dog</li>
 <li>CatDOG</li>
 <li>cat.dog</li>
-<li>catD0g</li>
+<li>catD*g</li>
 </ol>
 </section>
 <section id="excercise-1" class="slide level2">
@@ -2838,7 +2838,7 @@ types/structures</strong> (ex. nested lists)</li>
 <section id="min-break" class="title-slide slide level1">
 <h1>10 min break</h1>
 <center>
-<div class="countdown" id="timer_e9648370" data-update-every="1" tabindex="0" style="right:0;bottom:0;margin:5%;padding:50px;font-size:5em;position: relative; width: min-content;">
+<div class="countdown" id="timer_125f060d" data-update-every="1" tabindex="0" style="right:0;bottom:0;margin:5%;padding:50px;font-size:5em;position: relative; width: min-content;">
 <div class="countdown-controls"><button class="countdown-bump-down">−</button><button class="countdown-bump-up">+</button></div>
 <code class="countdown-time"><span class="countdown-digits minutes">10</span><span class="countdown-digits colon">:</span><span class="countdown-digits seconds">00</span></code>
 </div>
@@ -2987,9 +2987,15 @@ specified with the <strong>return</strong> keyword:</li>
 <ul>
 <li>Packages are collections of functions that are specialized to a
 specific task (plotting, data manipulation etc.)</li>
+</ul>
+<div class="sourceCode" id="cb16"><pre class="sourceCode r"><code class="sourceCode r"><span id="cb16-1"><a href="#cb16-1" aria-hidden="true" tabindex="-1"></a><span class="fu">library</span>(ggplot2) <span class="co"># Makes all of the ggplot2 functions available</span></span></code></pre></div>
+<ul>
 <li>The tidyverse is a collection of commonly used data analysis
-packages - Learning curve is less steep - Lots of useful packages for
-data analysis</li>
+packages
+<ul>
+<li>Learning curve is less steep</li>
+<li>Lots of useful packages for data analysis</li>
+</ul></li>
 </ul>
 </section>
 <section id="section-2" class="slide level2">

intro-r-data-analysis/Intro_to_R_data_analysis_part_1.Rmd

@@ -166,7 +166,7 @@ DogBreeds <- c("Labrador Retriever", "Akita", "Bulldog")
 1.    cat_dog
 2.    CatDOG
 3.    cat.dog
-4.    catD0g
+4.    catD*g
 
 
 ## Excercise 1
@@ -370,10 +370,16 @@ mystery_function <- function(x) {
 
 ## Packages
 -    Packages are collections of functions that are specialized to a specific task (plotting, data manipulation etc.)
+
+```{r}
+library(ggplot2) # Makes all of the ggplot2 functions available
+```
+
+
 -    The tidyverse is a collection of commonly used data analysis
 packages  
-    -   Learning curve is less steep
-    -   Lots of useful packages for data analysis
+      -   Learning curve is less steep
+      -   Lots of useful packages for data analysis
 
 ##