28. Do the restaurant ratings (q9_1, q9_7, q9_26, q9_36, q9_39)

differ for the various demographic characteristics (some recoded as specified in Chapter 15): age (S1), gender (S2), payment method (D1), number of people living at home (D3A), education

(D5), income (D6), employment (D7), marital status (D8), and region? Interpret the results.