b.com/ProjectMOSAIC/ggformula" class="external-link">ggformula</a></span><span class="op">)</span><span class="op">)</span> <span class="op">{</span></span></span>
<span class="r-in"><span>  <span class="va">mtcars</span> <span class="op">|&gt;</span></span></span>
<span class="r-in"><span>    <span class="fu">df_stats</span><span class="op">(</span><span class="va">hp</span> <span class="op">~</span> <span class="va">cyl</span>, <span class="va">mean</span>, <span class="va">median</span>, <span class="va"