> -----Original Message----- > From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] > On Behalf Of Rich Shepard > Sent: Wednesday, November 09, 2011 9:42 AM > To: r-help@r-project.org > Subject: Re: [R] Interpreting Multiple Linear Regression Summary > > On Wed, 9 Nov 2011, David Winsemius wrote: > > > I don't see a data= argument specified, so you are telling lm() that > your > > workspace has individual vectors by those names in the formula. That is > > not what is implied by hte rest of your message. > > David, > > That's because I attached the data frame before running the model. > > However, looking again at the scatter plots of the individual predictor > variables > with the response variable answered my question after I posted it. There > are > no patterns to the relationships in these scatter plots so there's nothing > to model. I became caught up in the repetitive processing for all these > data > and stopped really seeing what was in front of me. > > My apologies to the list, > > Rich
Rich, the problem is not just that there was 'nothing to model.' If that were the case, you would have gotten non-significant parameter estimates, not NA's. I would guess that there is something problematic with the how the data frame is structured relative to what lm() is expecting. So, I would not give up looking for a solution just yet. Can you show us the result of str() on the data frame that you attached? Dan Daniel Nordlund Bothell, WA USA ______________________________________________ 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.
