lass="r-pr">#&gt;</span>    &lt;th style="text-align:center;"&gt; relative_frequency &lt;/th&gt;</span>
<span class="r-out co"><span class="r-pr">#&gt;</span>   &lt;/tr&gt;</span>
<span class="r-out co"><span class="r-pr">#&gt;</span>  &lt;/thead&gt;</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> &lt;tbody&gt;</span>
<span class="r-out co"><span class="r-pr">#&gt;</span>   &lt;tr&gt;</span>
<span class="r-out co"><span class="r-pr">#&gt;</span>    &lt;td style="text-align:center;"&gt; setosa 