Data Management

Data Management tips and tricks

Merge a single observation data set to every observation of a multi-observation data set.


   proc summary nway data= income; 
     var yr_income; 
     output out= avg_income (drop= _type_ _freq_) 
       mean= avg_yr_income; 
   * variables _type_ and _freq_ are generated by proc summary *;

   data income; 
    if _N_ = 1 then set avg_income(keep= avg_yr_income); 
    set income; 

** NOTE:  This method re-orders the variables in your data set 
 *  such that avg_yr_income will be the first variable. **;



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