edomdegrees"><i class="fa fa-check"></i><b>13.2.1</b> Degrees of freedom</a></li>
<li class="chapter" data-level="13.2.2" data-path="ch-testing.html"><a href="ch-testing.html#sec:formulas13-1"><i class="fa fa-check"></i><b>13.2.2</b> formulas</a></li>
<li class="chapter" data-level="13.2.3" data-path="ch-testing.html"><a href="ch-testing.html#sec:ttest-assumptions"><i class="fa fa-check"></i><b>13.2.3</b> assumptions</a></li>
<li class="chapter" data-level="13.2.4" data-path="ch-testing.html"><a href="ch-te