pre>
<p>Exemplo:
</p>
<pre class="example">(%i1) load (descriptive)$
(%i2) load (numericalio)$
(%i3) s1 : read_list (file_search (&quot;pidigits.data&quot;))$
(%i4) mean_deviation (s1);
                               51
(%o4)                          --
                               20
(%i5) s2 : read_matrix (file_search (&quot;wind.data&quot;))$
(%i6) mean_deviation (s2);
(%o6) [3.287959999999999, 3.075342, 3.23907, 4.715664000000001, 
                                               4.028546000000002]
</pr