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I'm trying to run ordered logit regression using the mass package and I keep coming up with this error message in R. I'm running the model

fit2 <- polr(level ~ pvi + enrollment, data = schools, Hess = TRUE) summary(fit2)

But this gives me the error Error in svd(X) : infinite or missing values in 'x'

If I run the same model with just level and pvi I don't get any errors. Enrollment is an integer variable that goes from about 50-50,000 and there's no missing data.

Nicole Divers
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Did you try dividing enrollment by say 100 and then re-run the model. I tried doing that in my case and it helped.

Ritesh Kumar Sinha
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    Provide a sample data using `dput`. – Nad Pat Sep 18 '21 at 18:54
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