tml#merging-data-frames"><i class="fa fa-check"></i><b>3.4.5</b> Merging data frames</a></li>
<li class="chapter" data-level="3.4.6" data-path="wrangling-data-frames.html"><a href="wrangling-data-frames.html#reshape"><i class="fa fa-check"></i><b>3.4.6</b> Reshaping data frames</a></li>
</ul></li>
<li class="chapter" data-level="3.5" data-path="summarising-data-frames.html"><a href="summarising-data-frames.html"><i class="fa fa-check"></i><b>3.5</b> Summarising data frames</a></li>
<li class="chapter" data-