proc sql;
create table Rstd as
select cusip and year,std(dailyr) as with_in_std
from rvol
group by cusip, year;
quit;
I think this time I am even closer to the right answer than before. feels like I am learnings SAS more.
Yes. I know I do not have to put and year after cusip but simply do not know how to have grouped std...
I did both select cusip,std(dailyr) as with_in_std and select year,std(dailyr) as with_in_std
and it worked so good and saw groups std eight by cusip or year.
BUT... I want grouping using both year and cusip simultaneously.
I appreciate your help very much!
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