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Binomial with n != 1 #544

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ParadaCarleton opened this issue Jul 7, 2023 · 2 comments
Open

Binomial with n != 1 #544

ParadaCarleton opened this issue Jul 7, 2023 · 2 comments

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@ParadaCarleton
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Not sure if this is missing or just not documented. But it'd be nice to have a way to be able to do Binomial regressions with n not equal to 1, e.g. students_passing ~ teacher_salary with students_passing ~ Binomial(class_size, p_from_regression)
@palday
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palday commented Sep 14, 2023

The wts kwarg can be used to specify the the number of trials associated with a Binomial observation. Note that the response is always on the proportion/probability scale, so it would be prop_students_passing ~ ... with wts=n_students and NOT n_students_passing ~ ....

@ParadaCarleton
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I see, thanks. In that case, maybe this should be documented, and the error message replaced to be clearer?

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@palday @ParadaCarleton