What am I entering wrong in the following? I am trying to make a graph of factor 2 vs factor 1 and factor 3 vs factor 1 386 proc plot; 387 plot factor2*factor1=brand factor3*factor1=brand; ERROR: Variable FACTOR2 not found. ERROR: Variable FACTOR1 not found. ERROR: Variable BRAND not found. ERROR: Variable FACTOR3 not found. ERROR: Variable FACTOR1 not found. ERROR: Variable BRAND not found.
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