      <div class="panel panel-default">
    <div class="panel-heading codesum"><span class="anchor" id="proc-doe_evaluate_model_2"></span><h3>private  function doe_evaluate_model_2(mdl, x, err) result(rst)  
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        <p>Evaluates the model of the following form.</p>
<p>
<script type="math/tex; mode=display"> Y = \beta_{0} + \sum_{i=1}^{n} \beta_{i} X_{i} + \sum_{i=1}^{n} 
\sum_{j=1 \\ i \neq j}^{n} \beta_{ij} X_{i} X_{j} + \sum_{i=1}^{n} 
\sum_{j=1}^{n} \sum_{k=1 \\ i