[R] glm(quasipoisson) with non-integer response
Prof Brian Ripley
ripley at stats.ox.ac.uk
Fri Apr 18 08:53:01 CEST 2008
On Thu, 17 Apr 2008, Mark wrote:
> I have count data that have been meddled with enough to make them non
> integers. Using glm(poisson) returns a "non integer" error but
> glm(quasipoisson) does not. Just wondering if anyone knows if I am
> violating the assumptions of a quasipoisson error structure by using
> these non-integer response data?
No, it just assumes variance \propto mean.
> Thanks! I'd welcome your thoughts and/or references...
The help page gives the references ....
Brian D. Ripley, ripley at 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
More information about the R-help