Hello, I am trying to generate a data set for a two factor random-effects model. The closest I have been able to get is: data part1; do i=1 to 3; do j=1 to 9; do k=1 to 2; a=rannor(1); b=rannor(1); c=rannor(1); e=rannor(1); x=a+b+c+e; output; end; end; end; run; However, this doesn't work because, for example, a will equal something different every time that i=1. I believe that I need to have the same random a for every i, b for every j, and c for every k. How do I do this? Thank you everyone
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