tml" class="external-link">covratio</a></code></dt>
<dd><p>the change in the determinant of the covariance matrix of the estimates by deleting the <em>i</em>th observation</p></dd>


</dl></div>
    <div class="section level2">
    <h2 id="references">References<a class="anchor" aria-label="anchor" href="#references"></a></h2>
    <p>Barrett, B. E. and Ling, R. F. (1992).
     General Classes of Influence Measures for Multivariate Regression.
     <em>Journal of the American Statistical Association</em>, <b