l#cb22-10"></a>iris <span class="op">%&gt;%</span><span class="st"> </span><span class="kw">group_by</span>(Species) <span class="op">%&gt;%</span><span class="st"> </span><span class="kw">summarize_all</span>(mean) <span class="op">%&gt;%</span></span>
<span id="cb22-11"><a href="Intro.html#cb22-11"></a>ungroup <span class="op">%&gt;%</span><span class="st"> </span><span class="kw">gather</span>(measure, value, <span class="op">-</span>Species) <span class="op">%&gt;%</span></span>
<span id="cb22-12"><a hr