nce/percent_missing.html">percent_missing</a></span><span class="op">(</span><span class="va">airquality</span><span class="op">)</span>
<span class="co">#&gt;      Ozone  Solar.R Wind Temp Month Day</span>
<span class="co">#&gt; 1 24.18301 4.575163    0    0     0   0</span></code></pre></div>
<p>We can get the results by group by providing an optional <code>grouping_cols</code> character vector.</p>
<div class="sourceCode" id="cb18"><pre class="downlit sourceCode r">
<code class="sourceCode R"><span class