1661752 mid 50%    mid 50%  0.2058022   F  Mxd</span>
<span class="co">#&gt; 5      1  0.5443412   mixed 0.1661752 mid 50%    mid 50%  0.3711052   F  Mxd</span>
<span class="co">#&gt; 6      1  1.7348992   mixed 0.1661752 mid 50% bottom 25%  2.1894372   M  Mxd</span>
<span class="co">#&gt;   student</span>
<span class="co">#&gt; 1     143</span>
<span class="co">#&gt; 2     145</span>
<span class="co">#&gt; 3     142</span>
<span class="co">#&gt; 4     141</span>
<span class="co">#&gt; 5     138</span>
<spa