> Date: Thu, 21 Oct 1999 12:38:09 -0400
> From: Eran Bellin <belliney@idt.net>
>
> I am having trouble recreating an analysis using the standard
> hosmer-lemeshow dataset cited in V&R 3rd edition.
>
> P.222 Venables and Ripley
>
> Relevant section of the analysis:
>
> > options(constrasts=c("contr.treatment","contr.poly"))
It is spelt `contrasts'.
> I am assuming that race1 is comparing race=2 to race=1 and that race2 is
> comparing race=3 to race=1.
You assume wrong: the labels are different from the book, for a good reason:
you have Helmert contrasts.
--
Brian D. Ripley, ripley@stats.ox.ac.uk
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272860 (secr)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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