data student;
input class sex $ age weight height @@;
cards;
1 f 15 46 156 1 f 14 41 149 1 m 15 50 160
1 m 13 48 155 1 m 14 38 150 2 m 16 55 165
2 m 16 60 170 2 f 17 50 160 2 f 16 60 165
2 m 17 65 175 3 f 18 65 165 3 f 17 58 160
3 m 18 70 180 3 f 18 61 162 3 m 17 68 176
;
run;