Testing Marginal Homogeneity

If marginal homogeneity holds, then the difference between the likelihood ratio statistics for the symmetry and quasi-symmetry models should have a chi-squared distribution with degrees of freedom equal to the number of categories minus 1. Thus, to test marginal homogeneity, you must compute the significance value for a chi-square statistic of 50.114-2.964=47.150 with 4-1=3 degrees of freedom.

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