></span>
<span id="cb16-20"><a href="#cb16-20" aria-hidden="true"></a><span class="co"># 5:     5  544.2857</span></span>
<span id="cb16-21"><a href="#cb16-21" aria-hidden="true"></a><span class="co"># 6:     6  608.5714</span></span></code></pre></div>
<div id="section-11" class="section level4 bs-callout bs-callout-info">
<h4 class="bs-callout bs-callout-info"></h4>
<ul>
<li><p>Note that the new column <code>speed</code> has been added to <code>flights</code> <em>data.table</em>. This is because <code>:=<