 <dl><dt>

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

        </dt>
        <dd>Test a hypothesis about the strength of a Pearson's <em>r</em> correlation</dd>
      </dl><dl><dt>

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

        </dt>
        <dd>Test a hypothesis about a difference in a continuous outcome variable.</dd>
      </dl><dl><dt>

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

        </dt>
        <dd>Test a hypot