Hi all,
I have such a proc glm test:
proc glm data=dataset1;
class f1 f2 f3 ;
model car = a b a*b f1 f2 f3 / solution;
run; quit;
Normally I would get individual t value and p value for each of the independent variables. But I also want to test this:
b1+b3=0.
b1 being the coefficient for variable a, and b3 being the coefficient for a*b
I've been doing some googling, and it seems that I need to use estimate or contrast statement? I didn't get the help I needed from googling. Anyone please help? Appreciate it!
Hi PG,
Thanks for replying! But I have one question though.
Does "a 1 a*b -1" mean that I'm testing the hypothesis " b1-b3 = 0"?
Since I want to test if b1+b3=0, do I want to do the following:
estimate 'test' a 1 a*b 1?
Thanks!
Add the statement
estimate 'test' a 1 a*b -1;
Hi PG,
Thanks for replying! But I have one question though.
Does "a 1 a*b -1" mean that I'm testing the hypothesis " b1-b3 = 0"?
Since I want to test if b1+b3=0, do I want to do the following:
estimate 'test' a 1 a*b 1?
Thanks!
Sorry, my error, you are right.
Thanks a lot!
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