ul></li>
<li class="chapter" data-level="3" data-path="summarizing-data.html"><a href="summarizing-data.html"><i class="fa fa-check"></i><b>3</b> Summarizing data</a>
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<li class="chapter" data-level="3.1" data-path="summarizing-data.html"><a href="summarizing-data.html#why-summarize-data"><i class="fa fa-check"></i><b>3.1</b> Why summarize data?</a></li>
<li class="chapter" data-level="3.2" data-path="summarizing-data.html"><a href="summarizing-data.html#summarizing-data-using-tables"><i class="fa fa-ch