Render site

help.html

@@ -353,14 +353,14 @@ <h2><strong>Why are my changes not taking effect? It’s making my results look
 <p>Here we are creating a new object from an existing one:</p>
 <pre class="r"><code>new_rivers &lt;- sample(rivers, 5)
 new_rivers</code></pre>
-<pre><code>## [1]  300  310 1243  215 1100</code></pre>
+<pre><code>## [1] 2348  600  444  981  338</code></pre>
 <p>Using just this will only print the result and not actually change <code>new_rivers</code>:</p>
 <pre class="r"><code>new_rivers + 1</code></pre>
-<pre><code>## [1]  301  311 1244  216 1101</code></pre>
+<pre><code>## [1] 2349  601  445  982  339</code></pre>
 <p>If we want to modify <code>new_rivers</code> and save that modified version, then we need to reassign <code>new_rivers</code> like so:</p>
 <pre class="r"><code>new_rivers &lt;- new_rivers + 1
 new_rivers</code></pre>
-<pre><code>## [1]  301  311 1244  216 1101</code></pre>
+<pre><code>## [1] 2349  601  445  982  339</code></pre>
 <p>If we forget to reassign this can cause subsequent steps to not work as expected because we will not be working with the data that has been modified.</p>
 <hr />
 </div>
@@ -409,7 +409,7 @@ <h2><strong>Error: object ‘X’ not found</strong></h2>
 <p>Make sure you run something like this, with the <code>&lt;-</code> operator:</p>
 <pre class="r"><code>rivers2 &lt;- new_rivers + 1
 rivers2</code></pre>
-<pre><code>## [1]  302  312 1245  217 1102</code></pre>
+<pre><code>## [1] 2350  602  446  983  340</code></pre>
 <hr />
 </div>
 <div id="error-unexpected-in-error-unexpected-in-error-unexpected-x-in" class="section level2">

modules/Statistics/lab/Statistics_Lab.Rmd

@@ -57,8 +57,8 @@ Change your code from 1.2 to add a few more variables:
 
 Perform a t-test to determine if there is evidence of a difference between low birth weight percentage (`LowBirthWeight`) in Los Angeles census tracts compared to San Diego:
 
-* Create a subset of the data for CaliforniaCounty == "Los Angeles"
-* Create a subset of the data for CaliforniaCounty == "San Diego"
+* Create a subset of the data for `CaliforniaCounty == "Los Angeles"`
+* Create a subset of the data for `CaliforniaCounty == "San Diego"`
 * `pull` the `LowBirthWeight` column for both subsets
 * Use `t.test` to compare the two pulled vectors
 * Print the results using the `tidy` function from the `broom` package
@@ -141,6 +141,8 @@ Let's make `LowBirthWeight` into a binary variable, where over 5% low birth weig
 The following code creates a column `weight_cat` with TRUE/FALSE values.
 
 ```{r}
+ces <- read_csv("https://daseh.org/data/CalEnviroScreen_data.csv")
+
 ces_bw <- 
   ces %>% 
   mutate(weight_cat = LowBirthWeight > 5)

modules/Statistics/lab/Statistics_Lab_Key.html

@@ -225,8 +225,8 @@ <h3>1.3</h3>
 <h3>1.4</h3>
 <p>Perform a t-test to determine if there is evidence of a difference between low birth weight percentage (<code>LowBirthWeight</code>) in Los Angeles census tracts compared to San Diego:</p>
 <ul>
-<li>Create a subset of the data for CaliforniaCounty == “Los Angeles”</li>
-<li>Create a subset of the data for CaliforniaCounty == “San Diego”</li>
+<li>Create a subset of the data for <code>CaliforniaCounty == &quot;Los Angeles&quot;</code></li>
+<li>Create a subset of the data for <code>CaliforniaCounty == &quot;San Diego&quot;</code></li>
 <li><code>pull</code> the <code>LowBirthWeight</code> column for both subsets</li>
 <li>Use <code>t.test</code> to compare the two pulled vectors</li>
 <li>Print the results using the <code>tidy</code> function from the <code>broom</code> package</li>
@@ -409,6 +409,15 @@ <h3>P.3</h3>
 <h3>P.4</h3>
 <p>Let’s make <code>LowBirthWeight</code> into a binary variable, where over 5% low birth weight is “TRUE”.</p>
 <p>The following code creates a column <code>weight_cat</code> with TRUE/FALSE values.</p>
+<pre class="r"><code>ces &lt;- read_csv(&quot;https://daseh.org/data/CalEnviroScreen_data.csv&quot;)</code></pre>
+<pre><code>## Rows: 8035 Columns: 67
+## ── Column specification ────────────────────────────────────────────────────────
+## Delimiter: &quot;,&quot;
+## chr  (3): CaliforniaCounty, ApproxLocation, CES4.0PercRange
+## dbl (64): CensusTract, ZIP, Longitude, Latitude, CES4.0Score, CES4.0Percenti...
+## 
+## ℹ Use `spec()` to retrieve the full column specification for this data.
+## ℹ Specify the column types or set `show_col_types = FALSE` to quiet this message.</code></pre>
 <pre class="r"><code>ces_bw &lt;- 
   ces %&gt;% 
   mutate(weight_cat = LowBirthWeight &gt; 5)</code></pre>