Re: [R] Question on mixed effect models with LME

On Wed, Oct 21, 2009 at 11:06 AM, Peter Flom wrote: ... > I have a longitudinal data set, with data on schools and their test scores > over a four year period.  I have centered year, and run the following > > > m1.mod1 <- lme(fixed = math_1 ~ I(year-2007.5)*TFC_, >               data = long, >  

[R] Question on mixed effect models with LME

Good afternoon Using R 2.9.2 on a machine running Windows XP I have a longitudinal data set, with data on schools and their test scores over a four year period. I have centered year, and run the following m1.mod1 <- lme(fixed = math_1 ~ I(year-2007.5)*TFC_, data = long,