data
partial;
input
y x2 x3;
datalines;
3
3 5
1
1 4
8
5 6
3
2 4
5
4 6
;
run;
proc
corr data=partial;
var
y x2;
var
x2 x3;
var
y x3;
partial x2;
run;
/*
r12.3=(r12 - r13*r23)/((1-r13^2)^.5*(1-r23^2)^.5) */
/*long
way*/
proc
reg data=partial;
model
y=x2;
output
out=results1 residual=resd1;
run;
proc
reg data=results1;
model
x3=x2;
output
out=results2 residual=resd2;
run;
proc
reg data=results2;
model
resd1=resd2;
run;