Suppose we have variables ID X Y and our data looks like this:
003 42 34
004 54 65
005 33 46
. . .
I want to perform a paired and unpaired t-test on the X and Y variables without a data step (this is part of the question).. I understand
how to do a paired, but how can you do an unpaired t-test, as in X and Y are just different sets of sample data? es
Proc Transpose...; by id; var x y; run; ? Then proc ttest...; class _NAME_; var col1; run;
You need to transform your data so that you have your variables stacked and a new variable that identifies the groups:
ID Var Value
1 X 1
1 Y 2
1 X 3
1 Y 4
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