[R] contrasts error message in lm

2007-07-31 Thread A Serebrenik
Dear all, I would like to find a linear regression model for a rather large dataset (27 independent variables). However, when I run lm the following error is reported: out - lm(Result ~ AppealA + AppealsB + AppealC + AppealD + AppealE + Apply + ApplyAmount + Aprove + Closecase +

Re: [R] contrasts error message in lm

2007-07-31 Thread Marc Schwartz
On Tue, 2007-07-31 at 21:28 +0200, A Serebrenik wrote: Dear all, I would like to find a linear regression model for a rather large dataset (27 independent variables). However, when I run lm the following error is reported: out - lm(Result ~ AppealA + AppealsB + AppealC + AppealD +

Re: [R] contrasts error message in lm

2007-07-31 Thread Prof Brian Ripley
On Tue, 31 Jul 2007, A Serebrenik wrote: Dear all, I would like to find a linear regression model for a rather large dataset (27 independent variables). However, when I run lm the following error is reported: out - lm(Result ~ AppealA + AppealsB + AppealC + AppealD + AppealE + Apply +