an>
<span class="c">!     COMPUTE THE SAMPLE MINIMUM AND MAXIMUM,</span>
<span class="c">!     THEN COMPUTE THE CLASS WIDTH.</span>
<span class="c">!</span>
<span class="w">         </span><span class="n">xmin</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">X</span><span class="p">(</span><span class="mi">1</span><span class="p">)</span>
<span class="w">         </span><span class="n">xmax</span><span class="w"> </span><span class="o">=</span><span class="w"> </