de>
and <code class="code">run</code> as the factors. <code class="code">run</code> may also be considered a quantitative
variate to account for linear (or polynomial) changes in the measurement over
the course of a single experiment.
</p>
<h4 class="subsubheading" id="Source-40"><span>Source<a class="copiable-link" href="#Source-40"> &para;</a></span></h4>

<p>A. J. Weekes (1986). <cite class="cite">A Genstat Primer</cite>. London: Edward Arnold.
</p>
<p>S. M. Stigler (1977). Do robust estimators work with