he Hair x Eye table comes rom a survey of students at the University of
Delaware reported by Snee (1974). The split by Sex was added by Friendly
(1992a) for didactic purposes.
</p>
<p>This data set is useful for illustrating various techniques for the analysis
of contingency tables, such as the standard chi-squared test or, more
generally, log-linear modelling, and graphical methods such as mosaic plots,
sieve diagrams or association plots.
</p>
<h4 class="subsubheading" id="Source-25"><span>Source<a class=