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On Mon, 2005-07-11 at 11:30 +0200, Smit, R. (Robin) wrote: > Hello, > > The estimate of glm dispersion can be based on the deviance or on the > Pearson statistic. > I have compared output from R glm() to another statastical package and > it appears that R uses the Pearson statistic. A quick search would also highlight the following thread http://www.r-project.org/nocvs/mail/r-help/2002/6938.html > I was wondering if it is possible to make use R the deviance instead by > modifying the glm(...) function? I don't know what the formula for using the deviance is but _IF_ it is the square root of ratio of null deviance by its degrees of freedom, then sqrt( fit$deviance / fit$df.null ) should be useful. > Thanks for your attention. > > Kind regards, > Robin Smit > > > > This e-mail and its contents are subject to the DISCLAIMER at > http://www.tno.nl/disclaimer/email.html > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html > ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html