Each week Variety magazine summarizes reviews of new movies by critics in several cities. Each review is categorized as pro, con, or mixed, according to whether the overall evaluation is positive, negative, or a mixture of the two. Table 10.16 summarizes the ratings from April 1995 through September 1996 for Chicago film critics Gene Siskel and Roger Ebert.

a. Fit the symmetry model, quasi-independence model, and quasi symmetry model. Interpret.

b. Test marginal homogeneity using models, and interpret.

c. Analyze these data using agreement models and/or measures of agreement.

Table 10.16:

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Ebert Siskel Mixed Pro Con 13 11 64 Con Mixed 24 13 10 Pro 64