n of experiments result.  The model
is 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 \neq j \neq k}^{n} \beta_{ijk} X_{i} 
X_{j} X_{k} + ... </script>
</p>
    <br>

    <section class="visible-xs visible-sm hidden-md">
        <h3>Contents</h3>
  
      <div class="panel panel-primary">
      <div class="panel-heading text