Re: [R] factors in probit regression

2011-10-07 Thread David Winsemius
On Oct 7, 2011, at 1:32 AM, Daniel Malter wrote: Note that the whole model screams at you that it is wrongly modeled. You are running a fully interacted model with factor variables. Thus, you have 19 regressors plus the baseline for 150 observations. Note that all your coefficients are

Re: [R] factors in probit regression

2011-10-07 Thread Pablo García Díaz
Dear Daniel, I was thinking on what's wrong with you, and what it is supposed you're trying to critisize without knowing my work or any other detail. For your knowledge, the model I've sent was just an example; I've fitted 17 different models (no interactions, only one factor, etc) and of course

Re: [R] factors in probit regression

2011-10-07 Thread Daniel Malter
You can get an estimate for the omitted baseline category by not estimating the intercept. To do that, type -1 on the right-hand side of the regression statement. If that was your actual question, the simple question, How can I omit the baseline in a regression?, would have sufficed. Moreover, it

Re: [R] factors in probit regression

2011-10-06 Thread Daniel Malter
I need to quote David Winsemius on this one again: The advancement of science would be safer if you knew what you were doing. Note that the whole model screams at you that it is wrongly modeled. You are running a fully interacted model with factor variables. Thus, you have 19 regressors plus the