Re: [R] Sum of Squares in a lme model

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From: Deepayan Sarkar (deepayan@stat.wisc.edu)
Date: Sat 22 May 2004 - 12:58:52 EST


Message-id: <200405212158.52996.deepayan@stat.wisc.edu>

On Friday 21 May 2004 09:41, Federico Calboli wrote:
> Dear All,
>
> I would like to ask how to get the Sum of Squares from fitted lme
> model. I appreciate that lme maximises the likelihood (or REML) and
> uses likelihood ratio tests, but I just fail why I could not get the
> SS if I want them. I could use lm to calculate them, but it looks
> quite pointless to fit a second (and wrong in a way) model for
> something so trivial.

Exactly what do you wish to square and sum ? If it's the 'errors' (which
in this context is ambiguous), extract them (see ?residuals.lme),
square them and sum them. But what are you planning to do with this
after you get it ?

Deepayan

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