[R] [FORGED] Re: SE for all levels (including reference) of a factor atfer a GLM

[Peter Dalgaard]

To give a short answer to the original question:

> On 16 Feb 2018, at 05:02 , Rolf Turner <r.turner at auckland.ac.nz> wrote:
> 
> In order to ascribe unique values to the parameters, one must apply a "constraint".  With the "treatment contrasts" the constraint is that
> beta_1 = 0.

...and consequently, being a constant, has an s.e. of 0.  


-- 
Peter Dalgaard, Professor,
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