Refer to Table 6.12. Treating job satisfaction as the response, analyze the data using a cumulative logit model.  a. Describe the effect of income, using scores {3, 10, 20, 35}. b. Compare the...

Refer to Table 6.12. Treating job satisfaction as the response, analyze the data using a cumulative logit model.

 a. Describe the effect of income, using scores {3, 10, 20, 35}.

b. Compare the estimated income effect to the estimate obtained after combining categories “Very dissatisfied” and “A little satisfied.” What property of the model does this reflect?

c. Can you drop gender from the model in (a)?