How can I make pair comparisons to determine the significance among three choices (a, b, c) in Chi-square?

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This reduced model is equivalent to the final model because omitting the effect does not increase the degrees of freedom. What does this mean?

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Computing the predicted probabilities for each independent variable with two or three values, including the reference category?

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Can we build two multinomial regression models for two research quetions?

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How should we deal with the issue "Floating point overflow occurred while computing this statistic. Its value is therefore set to system missing."?

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David Eugene Booth

What do you mean by significant difference here?. Best, David

Sal Mangiafico

I suspect the question will need to be clarified to get an appropriate answer. For example, is there a correct or incorrect choice? Is there only one question? If there are multiple questions, is choice A for question 1 somehow the same as choice A for question 2? Is the goal to determine if the two groups choose differently, Or to determine which choice is most popular? Can the choices A, B, C be considered as ordered?