How do I sort my data for PROC FREQ

[Thuto]

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;

[PaigeMiller · Accepted solution]

Please note the correction in red

proc freq data=myclass2;

MYCLASS is not sorted by sex. MYCLASS2 is sorted by sex.

[Thuto]

Thanks a lot