a href="estimate_pdiff_two.html">estimate_pdiff_two()</a></code>

        </dt>
        <dd>Estimates for a two-group study with a categorical outcome variable</dd>
      </dl><dl><dt>

          <code><a href="estimate_proportion.html">estimate_proportion()</a></code>

        </dt>
        <dd>Estimates for a categorical variable with no grouping (single-group design)</dd>
      </dl></div><div class="section level2">
      <h2 id="estimates-for-pearson-s-r">Estimates for Pearson’s r<a class="anchor" ar