>,
  center <span class="op">=</span> <span class="cn">TRUE</span>,
  scale <span class="op">=</span> <span class="cn">FALSE</span>,
  return_residuals <span class="op">=</span> <span class="cn">FALSE</span>
<span class="op">)</span></code></pre></div>
    </div>

    <div id="arguments">
    <h2>Arguments</h2>
    <dl><dt>X</dt>
<dd><p>n by p matrix of regressors.</p></dd>
<dt>y</dt>
<dd><p>n-vector of response variables.</p></dd>
<dt>Z</dt>
<dd><p>Optional n by k matrix of covariates to be included in all