ntro.html"><a href="ch-intro.html#summary-statistics"><i class="fa fa-check"></i><b>1.4.1</b> Summary statistics</a></li>
<li class="chapter" data-level="1.4.2" data-path="ch-intro.html"><a href="ch-intro.html#visual-exploration"><i class="fa fa-check"></i><b>1.4.2</b> Visual exploration</a></li>
</ul></li>
<li class="chapter" data-level="1.5" data-path="ch-intro.html"><a href="ch-intro.html#analysis-and-modelling"><i class="fa fa-check"></i><b>1.5</b> Analysis and modelling</a></li>
<li class="chapter" dat