Hi john : I just checked it with a simple example before I saw your email and that does work. Thanks and I apologize to you and the list for the question.
-----Original Message----- From: John Fox [mailto:[EMAIL PROTECTED] Sent: Wednesday, October 03, 2007 6:06 PM To: Leeds, Mark (IED) Cc: [EMAIL PROTECTED] Subject: RE: [R] Forcing zero intercept in two predictor case - stat questionnot R question Dear Mark, -------------------------------- John Fox, Professor Department of Sociology McMaster University Hamilton, Ontario Canada L8S 4M4 905-525-9140x23604 http://socserv.mcmaster.ca/jfox -------------------------------- > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Leeds, Mark (IED) > Sent: Wednesday, October 03, 2007 5:49 PM > To: [EMAIL PROTECTED] > Subject: [R] Forcing zero intercept in two predictor case - stat > questionnot R question > > When one is doing simple regression and needs to force a zero > intercept ( for whatever reason. I realize it's a controversial issue > ), then subtracting the means of the left hand side and the right hand > side from themselves does the trick. Does anyone know if there is a > similar trick when the RHS has two variables ? Thanks. Yes, express all three variables as deviations from their means. (This follows from the observation that the LS regression surface goes through the centroid of the variables.) Regards, John -------------------------------------------------------- This is not an offer (or solicitation of an offer) to buy/se...{{dropped}} ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
