Create new variable called Adjusted GPA that is the GPA reported in the fileminus the average GPA for everyone.
This is what I have so far:
PROC Summary Data=Students;
Var GPA;
Output out=Students1(Keep=AveGPA) mean=AveGPA;
Run;
Data studentnew;
if_n_=1 then set Students;
set students1;
AdjGPA=(sum"GPA"n)/AveGPA;
AdjGPA= round(AdjGPA, .01);
run;
Your description and code don't match. In one you say GPA-avgGPA, but in the other you divide the two.
Regardless, I think the following will work (although you might have to change the calculation if you are looking for the remainder):
PROC Summary Data=sashelp.class (rename=(age=gpa)); Var gpa; Output out=Students1(Keep=AveGPA) mean=AveGPA; Run; Data studentnew; set sashelp.class (rename=(age=gpa)); if _n_=1 then set students1; AdjGPA=round(GPA/AveGPA, .01); run;
HTH,
Art, CEO, AnalystFinder.com
1. Calculate average and store in dataset
2. Merge with main dataset
3. Subtract
SQL solution, one step.
proc sql;
create table want as
select *,
mean(gpa) as avg_gpa, /*1*/
gpa - calculated avg_gpa as GPA_Residual /*3*/
from students; /*2*/
quit;
Data step/proc solution. Note the datasets names are reversed from yours, and I set Validvarname = V7 so no need for name literals.
options validvarname=v7;
/*1*/
PROC Summary Data=Students;
Var GPA;
Output out=Students1(Keep=AveGPA) mean=AveGPA;
Run;
Data studentnew;
/*2*/
if_n_=1 then set Students1;
set students;
AdjGPA =round( GPA-AveGPA, 0.01); /*3*/
run;
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