Ordinal factors in regression models

Hi BlueSky Statistics Team!

I find a problem using the linear regression model with factor regressors: as a simple example, if “Diploma” is used as a nominal factor with 4 categories, in the model formula the labels of the 3 categories are correct, but if “Livelli_spesa” is an ordinal factor with 3 categories (“bassa”,”media”,”alta”) the labels are “.L”, “.Q” (note the dot): what this means?

Thanks. M.

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roycarlson56

Sep 19

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Ordinal factors in regression models