Thank you all ;)
On Wed, Jul 3, 2013 at 4:28 PM, S Ellison <s.elli...@lgcgroup.com> wrote:
> > Now I have question: what about y=b fitting? is there any model to
> > force or impose the ax to be zero
>
> Rui Barradas has answered correctly for a simple lm case.
>
> You can also do
> lm(y~1) to obtain an estimated mean.
>
> That formulation happens to be quite useful if you are interested in a
> purely random-effects model* fitted using, say, lme, though you won't
> generally get a simple mean for unbalanced data in such a case.
>
> S Ellison
>
>
>
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