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1answer
306 views

Why does Type II/III ANOVA on cumulative link model (R-package ordinal) give different results depending on factor order?

From what I understand, type II and type III ANOVA should give the same result irrespective of the order of the factors in the formula because they calculate: ...
2
votes
0answers
212 views

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 ...
1
vote
0answers
93 views

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 ...
0
votes
1answer
321 views

Random slopes — parsimonious mixed-effects models

This is a beginner level question, and I apologise in advance if the answer is obvious. If a by-subject random slope for a predictor "X" improves the model fit*, but the predictor "X" is not ...
0
votes
0answers
48 views

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 ...