"></a>                              )</span></code></pre></div>
<ul>
<li>Comments
<ul>
<li>Use comments to explain your decisions.</li>
<li>But, show your code; Do not try to explain your code by comments.</li>
<li>Also, try to comment out rather than delete the code that you experiment with.</li>
</ul></li>
</ul>
<div class="sourceCode" id="cb21"><pre class="sourceCode r"><code class="sourceCode r"><span id="cb21-1"><a href="Intro.html#cb21-1"></a><span class="co"># Average sleep hours of Jae</span></span>