 class="op">=</span> <span class="fl">0.1</span><span class="op">)</span><span class="op">)</span></span></span>
<span class="r-out co"><span class="r-pr">#&gt;</span>   response     mean trimmed_mean</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 1       hp 146.6875     141.1923</span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span class="co"># force names to by syntactically valid</span></span></span>
<span class="r-in"><span><span class="fu">df_stats</span><span cla