data sparrow;
  input humerus status;
  cards;
659     1
689     1
703     1
702     1
709     1
713     1
720     1
729     1
726     1
726     1
720     1
737     1
739     1
731     1
738     1
736     1
738     1
744     1
745     1
743     1
754     1
752     1
752     1
765     1
687     2
703     2
709     2
715     2
728     2
721     2
729     2
723     2
728     2
723     2
726     2
728     2
736     2
733     2
730     2
733     2
730     2
739     2
735     2
741     2
741     2
749     2
741     2
743     2
741     2
752     2
752     2
751     2
756     2
755     2
766     2
767     2
769     2
770     2
780     2
;

/* This line and the two below are comments that SAS ignores. */
/* status=1 means that the sparrow died     */
/* status=2 means that the sparrow survived */

proc univariate plot;
  var humerus;
  by status;
run;

proc ttest alpha=0.05;
  class status;
  var humerus;
run;