a></span><span class="op">(</span><span class="va">adm_enr</span><span class="op">[</span><span class="va">adm_enr</span><span class="op">$</span><span class="va">SAT</span> <span class="op">==</span> <span class="fl">1</span>, <span class="op">]</span><span class="op">)</span><span class="op">*</span><span class="fl">100</span><span class="op">/</span><span class="fu"><a href="https://rdrr.io/r/base/nrow.html" class="external-link">nrow</a></span><span class="op">(</span><span class="va">adm_enr</span><spa