an>
<span class="k">         </span><span class="n">xdel</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="n">xmax</span><span class="o">-</span><span class="n">xmin</span><span class="p">)</span><span class="o">/</span><span class="n">anuml</span>
<span class="c">!</span>
<span class="c">!     COMPUTE THE CLASS MIDPOINT FOR EACH CLASS</span>
<span class="c">!</span>
<span class="w">         </span><span class="k">DO </span><span class="n">i</