To give a short answer to the original question: > On 16 Feb 2018, at 05:02 , Rolf Turner <r.tur...@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....@cbs.dk Priv: pda...@gmail.com ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
