: Man or Woman.</p>
</dd>
<dt>exam1</dt><dd><p>Exam 1 grade.</p>
</dd>
<dt>exam2</dt><dd><p>Exam 2 grade.</p>
</dd>
<dt>exam3</dt><dd><p>Exam 3 grade.</p>
</dd>
<dt>course_grade</dt><dd><p>Overall course grade.</p>
</dd>
</dl>



<h3>Examples</h3>

<pre><code class='language-R'>
library(ggplot2)
library(dplyr)

# Course grade vs. each exam
ggplot(exam_grades, aes(x = exam1, y = course_grade)) +
  geom_point()

ggplot(exam_grades, aes(x = exam2, y = course_grade)) +
  geom_point()

ggplot(exam_grades, aes(x 