\begin{Schunk}
\begin{Sinput}
  rockchalk::summarize(dat)
\end{Sinput}
\begin{Soutput}
$numerics
         ed     grp       inc
0%    6.000  1.0000     11110
25%   9.500  1.0000     23170
50%  12.000  2.0000     34330
75%  14.500  3.0000     44390
100% 20.000  3.0000     78790
mean 12.370  2.0000     38760
sd    4.072  0.8165     18760
var  16.580  0.6667 351900000
NA's  0.000  0.0000         0
N    19.000 19.0000        19

$factors
            mar                     sex        
 N            : 9.0000   Mal          :10.000  
 Y            : 9.0000   Fem          : 9.000  
 W            : 1.0000   NA's         : 0.000  
 NA's         : 0.0000   entropy      : 0.998  
 entropy      : 1.2448   normedEntropy: 0.998  
 normedEntropy: 0.7854   N            :19.000  
 N            :19.0000                         
\end{Soutput}
\end{Schunk}
