5] "Native American" "Other/Unknown"   "White"</span></span>
<span></span>
<span><span class="co"># Possible values</span></span>
<span><span class="fu"><a href="https://rdrr.io/r/base/sort.html" class="external-link">sort</a></span><span class="op">(</span><span class="fu"><a href="https://rdrr.io/r/base/unique.html" class="external-link">unique</a></span><span class="op">(</span><span class="va">student</span><span class="op">$</span><span class="va">sex</span><span class="op">)</span><span class="op">)</