></span>
<span><span class="co">#&gt; 1: Female Under 25        Yes    80521        &lt;NA&gt;      580        390       27</span></span></code></pre></div>
<p><em>Course.</em>   For this student, the records span 47 rows, one
row per course.</p>
<div class="sourceCode" id="cb17"><pre class="downlit sourceCode r">
<code class="sourceCode R"><span><span class="co"># Observations for a selected ID</span></span>
<span><span class="va">course</span><span class="op">[</span><span class="va">mcid</span> <span cl