oss all across all groups. By making this layer interactive, we can query individual points for more information and zoom into interesting regions. The second layer of Figure <a href="overview.html#fig:geom-sina">2.11</a> uses <strong>ggplot2</strong>’s <code>stat_summary()</code> to overlay a 95% confidence interval estimated via a bootstrap algorithm via the <strong>Hmisc</strong> package <span class="citation">(Harrell Jr, Charles Dupont, and others. <a href="#ref-Hmisc" role="doc-biblioref">2019</a>)<