.stat01756" class="external-link">Potthoff-Whittinghill test</a> of homogeneity between two classes). The general test of homogeneity is typically a ‚Äútest of homogeneity of quantity <span class="math inline">\(x\)</span> with respect to various groups of samples.‚Äù</p>
<p>Defining homogeneity without sample labels is less straightforward. Here are some approaches taken by others:</p>
<ul>
<li>In Volume 5 of the <em>Encyclopedia of Statistical Sciences</em> (second edition <a href="https://www.wil