At 20:08 27/12/2010, Louisa wrote:
Dear,
I'm very new to R Gui and I have to make an assignment on Gamma Regressions.
Surfing on the web doesn't help me very much so i hope this forum may be a
step forward.
Well since you are so honest about it being homework try Googling for
lognormal gamma regression
The top hit from where I am sitting is an extensive set of notes with
examples in R although beware the use of _ for <-
The question sounds as follows:
The data set is in the library MASS
first install library(MASS)
then type data(mammals)
attach(mammals)
At this point you should complain that you are being taught poor
practice as it is nearly always better to use the data= parameter and
not attach data frames.
Assignment:
Fit the gamma model and lognormal model for the mammals data.
I appreciate any help you can provide.
Best Wishes,
Louisa
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Michael Dewey
http://www.aghmed.fsnet.co.uk
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