n id="cb12-3"><a href="#cb12-3" tabindex="-1"></a>df <span class="sc">%&gt;%</span> </span>
<span id="cb12-4"><a href="#cb12-4" tabindex="-1"></a>  <span class="fu">summarise</span>(<span class="at">n =</span> <span class="fu">n</span>(), <span class="fu">across</span>(<span class="fu">where</span>(is.numeric), sd))</span>
<span id="cb12-5"><a href="#cb12-5" tabindex="-1"></a><span class="co">#&gt;    n x        y</span></span>
<span id="cb12-6"><a href="#cb12-6" tabindex="-1"></a><span class="co">#&gt; 1 N