=+Table 2 Data for Problem 12.6 Group Mean age Optimism index Cynicism index Owners=managers 60 55

=+Table 2 Data for Problem 12.6 Group Mean age Optimism index Cynicism index Owners=managers 60 þ 55 1.1 Corporate executives 44 59 1.4 Middle managers 34 41 1.4 MBA students 25 30 1.8 Undergraduates 20 23 2.2 MEASURES OF ASSOCIATION IN MULTIPLE CLASSIFICATIONS 489