Refer to Table 7.5 (Chapter 7). Combine data for the two genders, yielding a single 4 X 4 table.

a. Use X and G to test independence. Interpret.

b. Partition G into three components for three 2 4 tables by (i) comparing the first two income levels on job satisfaction, (ii) comparing the last two income levels on job satisfaction, and (iii) comparing the first two income levels combined to the last two income levels combined. Interpret. Does job satisfaction appear to depend on whether one's income is below or above $15,000?

c. Now test independence using the ordinality of income and job satisfaction. Interpret the result and explain why the result is so different from the X and G tests.

d. Check the sensitivity to the choice of scores by redoing

(c) for a different "reasonable" set of scores. Interpret.