[R] Binomial glms with very small numbers

[Patrick Connolly]

V&R describes binomial GLMs with mortality out of 20 budworms.

Is it appropriate to use the same approach with mortality out of
numbers as low as 3?  I feel reticent to do so with data that is not
very continuous.  There are one continuous and one categorical
independent variables.

Would it be more appropriate to treat the response as an ordered
factor with four levels?  If so, what family would one use?

TIA

-- 
Patrick Connolly
HortResearch
Mt Albert
Auckland
New Zealand 
Ph: +64-9 815 4200 x 7188
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