<a href="ch-SEM-path-models.html#graphical-models"><i class="fa fa-check"></i><b>13.1</b> Graphical models</a>
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<li class="chapter" data-level="13.1.1" data-path="ch-SEM-path-models.html"><a href="ch-SEM-path-models.html#exogenous-and-endogenous-variables"><i class="fa fa-check"></i><b>13.1.1</b> Exogenous and endogenous variables</a></li>
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<li class="chapter" data-level="13.2" data-path="ch-SEM-path-models.html"><a href="ch-SEM-path-models.html#regression-models"><i class="fa fa-check"></i><b