On Thu, 28 Apr 2005, Thompson, David (MNR) wrote:
Thank you for the warning Prof Ripley, I will not use anova() as
I originally intended.
However, I am still in need of an answer to the question:
Q1. Do I interpret A lack of significance under F and Chi^2 tests
to indicate that the differences are negligible?
No. See Statistics 101 for how to interpret a significance test.
`A lack of significance' is merely lack of evidence.
-----Original Message-----
You cannot legitimately apply anova() to two models applied to
different
sets of data. You do have two sets of data, of different sizes.
--
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 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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