options ps=56 ls=80;
libname def 'c:\nut209\data';

proc format;
  value sexfmt 1='Male'
               2='Female';

data;
  set def.normtemp;
  format m1f2 sexfmt.;

proc sort;
  by m1f2;

proc univariate noprint;
  by m1f2;
  histogram temp;
  run;

proc univariate noprint;
   class m1f2;
   histogram temp;
   run;