On 27/05/2014 09:51, Xebar Saram wrote:
Hi all
i know this is probably a silly question but im wondering what is the
'reference' category when you run a binomal glm. that is my outcome/DV is
0,1 and i run a regression and get coefficients. do the coefficients refer
to the probability to get 0 or 1?
?binomial in R-devel says
For the ‘binomial’ and ‘quasibinomial’ families the response can
be specified in one of three ways:
1. As a factor: ‘success’ is interpreted as the factor not
having the first level (and hence usually of having the
second level).
2. As a numerical vector with values between ‘0’ and ‘1’,
interpreted as the proportion of successful cases (with the
total number of cases given by the ‘weights’).
3. As a two-column integer matrix. The first column gives the
number of successes and the second the number of failures.
thanks so much in advance
Z
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