[R] repeated measures ANOVA - among group differences

I have data on the proportion of clutches experiencing different fates (e.g., 4 different sources of mortality) for 5 months . I need to test 1) if the overall proportion of these different fates is different over the entire study and 2) to see if there are monthly differences within (and among)

[R] Overdispersion with binomial distribution

I am attempting to run a glm with a binomial model to analyze proportion data. I have been following Crawley's book closely and am wondering if there is an accepted standard for how much is too much overdispersion? (e.g. change in AIC has an accepted standard of 2). In the example, he fits sever

[R] Follow-up to Reply: Overdispersion with binomial distribution

THANKS so very much for your help (previous and future!). I have a two follow-up questions. 1) You say that dispersion = 1 by definition dispersion changes from 1 to 13.5 when I go from binomial to quasibinomialdoes this suggest that I should use the binomial? i.e., is the dispersion fact