 style="text-align: center"><span id="fig:geom-sina"></span>
<img src="images/geom-sina.svg" alt="A sina plot of diamond price by clarity and cut." width="100%" />
<p class="caption">
FIGURE 2.11: A sina plot of diamond price by clarity and cut.
</p>
</div>
<p>As noted by <span class="citation">Wickham and Grolemund (<a href="#ref-r4ds" role="doc-biblioref">2018</a>)</span>, it’s surprising that the diamond price would decline with an increase of diamond clarity. As it turns out, if we account for the car