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

Peter Dalgaard pdalgd at gmail.com
Fri Feb 16 10:24:26 CET 2018

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,
Center for Statistics, Copenhagen Business School
Solbjerg Plads 3, 2000 Frederiksberg, Denmark
Phone: (+45)38153501
Office: A 4.23
Email: pd.mes at cbs.dk  Priv: PDalgd at gmail.com

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