Thank you both for your kinds help

best
z.


On Tue, May 27, 2014 at 2:25 PM, Prof Brian Ripley <rip...@stats.ox.ac.uk>wrote:

> 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
>>
>>         [[alternative HTML version deleted]]
>>
>> ______________________________________________
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>>
>>
>
> --
> Brian D. Ripley,                  rip...@stats.ox.ac.uk
> Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
> University of Oxford,             Tel:  +44 1865 272861 (self)
> 1 South Parks Road,                     +44 1865 272866 (PA)
> Oxford OX1 3TG, UK                Fax:  +44 1865 272595
>

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