<dd><code>y</code> - observations on the regressand</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="../../../../../../org/apache/commons/math3/stat/regression/ModelSpecificationException.html" title="class in org.apache.commons.math3.stat.regression">ModelSpecificationException</a></code> - if <code>x</code> is not rectangular, does not match
 the length of <code>y</code> or does not contain sufficient data to estimate the model</dd></dl>
</li>
</ul>
<a name="clear()">
<!--   -->
</a>
<