t are put in the column <code>non_linear_II</code> of the <code>plot_data</code>.</p>
<p>Next, to see if there are differences in predictive performance between the two GEEs we plot the three scoring rules for the two GEEs using the following call to <code>xyplot()</code> from package <strong>lattice</strong>:</p>
<div class="sourceCode" id="cb3"><pre class="sourceCode r"><code class="sourceCode r"><a class="sourceLine" id="cb3-1" title="1"><span class="kw">xyplot</span>(non_linear_I <span class="op">+</spa