data everyone;
  input name$ gender$ age weight;
 cards;
Alfred       m  14  112.5
Alice        f  13   84.0
Brenda       f  13   98.0
Barbara      f  12  102.5
Bernadette   f  15   83.0
James        m  12   84.5
Jane         f  12  101.5
Henry        m  15  150.7
;;;;
data males;
  set everyone;
  if gender='m';
data females;
  set everyone;
  if gender='f';
proc print data=males;
proc print data=females;