-mod.html"><a href="pred-mod.html#review-questions-11"><i class="fa fa-check"></i><b>13.6</b> Review Questions</a></li>
</ul></li>
<li class="chapter" data-level="14" data-path="unsup-lrn.html"><a href="unsup-lrn.html"><i class="fa fa-check"></i><b>14</b> Unsupervised Learning</a>
<ul>
<li class="chapter" data-level="14.1" data-path="unsup-lrn.html"><a href="unsup-lrn.html#factor-analysis"><i class="fa fa-check"></i><b>14.1</b> Factor Analysis</a>
<ul>
<li class="chapter" data-level="14.1.1" data-path="unsu