SAS proc SQL and arrays

Question

This is a newbie SAS question. I have a dataset with numerical variables v1-v120, V and a categorical variable Z(with say three possible v

Answer 1

It's easy to do this with proc means. Using the t1 data set from Louisa Grey's answer:

proc means data=t1 nway noprint;
  class z;
  var v1-v3;
  output out=t3 mean=w1-w3;
run;

This creates an table of results that match the SQL results.