Summarising data
One of the most frequent tasks I do is summarising data using either proc sql or proc means with code like this:
proc means data=inputdata nway missing noprint; class var1 var2; var var3 var4; output out=outputdata (drop = _type_ _freq_) sum=; run;
Given that I use it in SAS a lot I’m going to assume that I’ll use it in R a lot so it seems like the next sensible thing to learn.
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