1
vote
1answer
60 views

How to validate “equal slopes” (proportional odds) in ordinal regression

I would like to fit an ordinal regression model using proportional odds. I learned to test for "equal slopes" in order to say something about the model's validity. Therefore, I fit a model with equal ...
0
votes
0answers
136 views

Mean squared error — internal and external validation

This is probably a very easy question... but I am not quite sure what the right answer should be.. I have validated 3 beforehand selected models. I have done internal cross validation and I have ...
2
votes
0answers
49 views

Validating previous analysis with new data

I am interested in trying to validate some results from a previous experiment. The experiment involves selecting probes of interest that separate our two populations of interest, e.g. smoker vs. ...