Hi, I am new in SAS. While I am doing Preacher & Hayes's sobel macro using SAS, I got error message. Please see below: statement : IF at line 182 column 1 ERROR: Matrix bw has not been set to a value. statement : PRINT at line 182 column 1 ERROR: Matrix op has not been set to a value. statement : PRINT at line 182 column 1 ERROR: Matrix r2med has not been set to a value. I executed the command set called called %sobel, with syntax: %sobel(data=file, y dv, x=iv, m med, boot=z); I added this syntax at the end of matrix provided by Precher's & Hayes... For example, . . . %mend sobel; %sobel (data=2011.sav, y=BDI, x=WORRY, m=DAILYCOMPGAME, boot=5000); Any idea?
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