span>
<span id="cb22-3"><a href="#cb22-3" tabindex="-1"></a>df <span class="sc">%&gt;%</span> <span class="fu">mutate</span>(<span class="fu">across</span>(<span class="fu">where</span>(is.numeric), <span class="sc">~</span><span class="fu">mean</span>(.x, <span class="at">na.rm =</span> <span class="cn">TRUE</span>)))</span>
<span id="cb22-4"><a href="#cb22-4" tabindex="-1"></a></span>
<span id="cb22-5"><a href="#cb22-5" tabindex="-1"></a>df <span class="sc">%&gt;%</span> <span class="fu">mutate_at</span>(