Re: [Rd] Estimating overdispersion when using glm for count and binomial data

2015-06-26 Thread David Fletcher
Ben Bolker writes: This looks really useful. Base R is very conservative; despite the fact that it would be much more easily adopted in base R, I think it is much more likely to find a home in an add-on package such as aods3 or glm2 than in base R ... Thanks for these suggestions Ben - Simon W

Re: [Rd] Estimating overdispersion when using glm for count and binomial data

2015-06-25 Thread Ben Bolker
David Fletcher maths.otago.ac.nz> writes: > > Dear All > > I recently proposed a simple modification to Wedderburn's 1974 estimate > of overdispersion for count and binomial data, which is used in glm for > the quasipoisson and quasibinomial families (see the reference below). > [snip] >

[Rd] Estimating overdispersion when using glm for count and binomial data

2015-06-24 Thread David Fletcher
Dear All I recently proposed a simple modification to Wedderburn's 1974 estimate of overdispersion for count and binomial data, which is used in glm for the quasipoisson and quasibinomial families (see the reference below). Although my motivation for the modification arose from considering s