://github.com/dcousin3/superb/blob/HEAD/R/WelchDegreeOfFreedom.R" class="external-link"><code>R/WelchDegreeOfFreedom.R</code></a></small>
    <div class="hidden name"><code>WelchDegreeOfFreedom.Rd</code></div>
    </div>

    <div class="ref-description">
    <p>When variance across groups are heterogeneous,
the Student <code>t</code> distribution with <code>n - 1</code> df is not the exact distribution.
However, (Welch 1947)
, using methods of moments, was able to find the
best-fitting <code>t</code> distr