ing objectives</a></li>
<li class="chapter" data-level="1.7" data-path="introduction.html"><a href="introduction.html#suggested-readings"><i class="fa fa-check"></i><b>1.7</b> Suggested readings</a></li>
</ul></li>
<li class="chapter" data-level="2" data-path="working-with-data.html"><a href="working-with-data.html"><i class="fa fa-check"></i><b>2</b> Working with data</a>
<ul>
<li class="chapter" data-level="2.1" data-path="working-with-data.html"><a href="working-with-data.html#what-are-data"><i class="fa