I'm getting an error saying "ERROR: Data set WORK.MYCLASS is not sorted in ascending sequence. The current BY group has Sex = M and the next BY group has Sex = F ". What am I supposed to do? I don't understand the error message. data myclass; set sashelp.class; where Age between 13 and 16; run; proc sort data=myclass out=myclass2; by sex; run; proc freq data=myclass; by sex; tables age; run;
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