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Ordered Probit Model in R: Latent Variable and Threshold Parameters

I have recently started to improve my methodological skills and programming in R. For a study term paper I now want to run an ordered logit/probit model. The data I use are taken from the European ...
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How to run an ordered-probit when your independent variable has one level?

I just have a quick question. I am running an ordered probit regression in R. I have classified my variables into numeric or factor accordingly, but I am having issues with one of the independent ...
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Missing one category while predicting with polr

I am trying to predict football outcome using an ordered logit model and I am using R. I used polr in R and everything works fine until the prediction part. the dependent variable is the result (home ...