ode, run it, and try calling <code>allSummaryFunctions()</code> again afterwards.</strong></p>
<p>First, we see what summary functions are available already:</p>
<pre class="r"><code>allSummaryFunctions()</code></pre>
<table>
<colgroup>
<col width="19%" />
<col width="42%" />
<col width="38%" />
</colgroup>
<thead>
<tr class="header">
<th align="left">name</th>
<th align="left">description</th>
<th align="left">classes</th>
</tr>
</thead>
<tbody>
<tr class="odd">
<td align="left">centralValue</td>
<td align