Hi, i am very new to SAS , and am stuck with some basic concept like using arbitrary variable for merging data sets > Could some one please explain the logic for the same. Data Num2; Set Num; i = 1; *Create an arbitrary variable for merging purpose; Run; proc means data=num2 noprint; Var Rnumber; By i; Output out=stat mean=mean std=std; run; Data Zscore; Merge Num2 Stat; By i; Zscore = (Rnumber - Mean)/std; Run;
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