One of the things I need in the code that I’m writting is to run a probit regression… I do it with GLM
I would like to obtain the Pseudo R2.
In the StatBase documentation there is a function for provinding r2
With a linear model there is no problem, it does not need the variant. My problem is that I am unable to make it work in a probit.
It needs the variant. It offers three possible variants:
- :MacFadden (a.k.a. likelihood ratio index), defined as 1 - log L/log L0.
- :CoxSnell, defined as 1 - (L0/L)^(2/n)
- :Nagelkerke, defined as (1 - (L0/L)^(2/n))/(1 - L0^(2/n)), with n the number
But nothing that I have tried seems to make it work.
Perhaps the question is siilly (I am rather new at this):
How do you input the “variant::Symbol” argument?
Thanks so much!