.tables together</p></td>
      </tr><tr><td>
          <p><code><a href="mutate_rowwise.html">mutate_rowwise()</a></code> </p>
        </td>
        <td><p>Add/modify columns by row</p></td>
      </tr><tr><td>
          <p><code><a href="n.html">n()</a></code> </p>
        </td>
        <td><p>Number of observations in each group</p></td>
      </tr><tr><td>
          <p><code><a href="n_distinct.html">n_distinct()</a></code> </p>
        </td>
        <td><p>Count the number of unique values in a vector<