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Categorical (also called nominal) data can take on a limited number of possible values called categories. Categorical values "label", they do not "measure". Please use [ordinal-data] tag for discrete but ordered data types.

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Why does my linear mixed model not output the random slopes for the model?

I have this dataframe: subject delta day_of_week A 30 0 C -20 3 Y -2 0 S 10 4 A -5 1 And I am trying to train a linear mixed model using the statsmodel library with this code: lmm …