Large contingency tables arise in many contexts but especially in the collection of survey and census data by government statistical agencies. Because the vast majority of the variables in this ...

WARNING: 50% of the cells have expected counts less than 5. (Asymptotic) Chi-Square may not be a valid test.

For the quasi-symmetry (QS) model, applicable to square contingency tables with commensurable classification variables, it is proved that under certain conditions, it is the closest model to symmetry ...