|Date: ||Tue, 10 Jul 2007 16:58:48 -0400|
|Reply-To: ||Wensui Liu <liuwensui@GMAIL.COM>|
|Sender: ||"SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>|
|From: ||Wensui Liu <liuwensui@GMAIL.COM>|
|Subject: ||Re: Can I do this multiplr regression?|
|Content-Type: ||text/plain; charset=ISO-8859-1; format=flowed|
your colleague regression is as simple as
X2 = X0 X1 X3 X4
as long as no assumption is violated here, then you should be ok.
On 7/5/07, Xiaobing Fang <firstname.lastname@example.org> wrote:
> A colleague asked me if he can do this multiple regression. He first
> calculated differences from X1 and X2 and used it as the dependent variable
> (Y). Then he wanted to run regression Y = X0 X1 X3 X4 where Y is the
> difference between X1 and X2, and he wanted to put X1 as one predictor. X0,
> X3, X4 are independent from Y.
> Can this multiple regression be done? Which assumption is violated?
"I am dying with the help of too many
physicians." - Alexander the Great, on his deathbed