A <a href="search.pl?p=nonparametric test">nonparametric test</a> used to assess relationships among variables in a 2 ´ 2 table when samples are small. Siegel and Castellan (1988) provide details on calculating this and other nonparametric statistics. <o:p></o:p></P>
<ul>
  <li><SPAN Plous, 
S. (1993), <I>Siegel, S. &amp; N. J. Castellan, Jr. (1988), 
<I>Nonparametric Statistics for the Behavioral Sciences</I>, 2<SUP>nd</SUP> ed. 
New York: McGraw-Hill.</SPAN></li>
</ul>