 class="co">#&gt; 6        home_zip character      &lt;NA&gt;</span></span>
<span><span class="co">#&gt; 7  hours_transfer   numeric      &lt;NA&gt;</span></span>
<span><span class="co">#&gt; 8     institution character character</span></span>
<span><span class="co">#&gt; 9            mcid character character</span></span>
<span><span class="co">#&gt; 10           race character      &lt;NA&gt;</span></span>
<span><span class="co">#&gt; 11       sat_math   numeric      &lt;NA&gt;</span></span>
<span><span c