DATA IQ_AND_TEST_SCORES;
INPUT ID $ 1-3 IQ 4-6 MATH 7-9 SCIENCE 10-12;
overall=(IQ+MATH+SCIENCE)/500;
if IQ GE 0 and IQ LE 100 THEN group='1';
else if IQ GT 101 and LE 140 THEN group='2';
else if IQ GT 140 THEN group='3';
DATALINES;
001128550590
002102490501
003140670690
004115510510
;
PROC sort data=IQ_AND_TEST_SCORES;
by ID;
RUN;
PROC print data=IQ_AND_TEST_SCORES;
RUN;
PROC freq data=IQ_AND_TEST_SCORES;
tables group;
RUN;



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