data d2;
input age 1-2 knwldge 4-5 iq 7-9;
*age ranges from 20 to 70
*knowledge test ranges from 0 to 100
*iq scores range from 80 to 130;
cards;
28 55 115
37 70 119
41 74 115
46 80 101
51 75 97
68 89 86
77 90 96
   80 101
44 99 130
61 70 95
22 41 95
30 84 100
28 58 101
37 75 125
41 69 100
46 80 101
51 75 97
68 89 100
77 90 96
   80 101
44 99 130
61 70 95
22 41 
30 84 100
41 69 100
46 80 101
51 75 97
68 89 100
77 90 96
   80 101
44 99 130
61 70 95
22 41 
30 84 100
46 80 101
51 75 97
68 89 100
77 90 96
   80 101
44 99 130
61 70 95
22 41 
30 84 100
;
proc print;
run;