Nominal (multinomial) Logistic Regression (Minitab): for each non-reference level j, log[P(Y = j)/P(Y = ref)] = α_j + x'β_j. Reference defaults to the first sorted level.
Optional
Nominal (multinomial) Logistic Regression (Minitab): for each non-reference level j, log[P(Y = j)/P(Y = ref)] = α_j + x'β_j. Reference defaults to the first sorted level.