 Date</td>
</tr>
<tr class="even">
<td align="left">quartiles</td>
<td align="left">Compute 1st and 3rd quartiles</td>
<td align="left">Date, integer, numeric</td>
</tr>
<tr class="odd">
<td align="left">uniqueValues</td>
<td align="left">Count number of unique values</td>
<td align="left">character, Date, factor, integer, labelled, logical, numeric</td>
</tr>
<tr class="even">
<td align="left">variableType</td>
<td align="left">Data class of variable</td>
<td align="left">character, Date, factor, integer, 