For Exercises 11.1 and 11.2, see page 533; for 11.3 and 11.4, see page 535; for 11.5 and 11.6, see page 537; for 11.7 and 11.8, see page 538; for 11.9 and 11.10, see page 541; for 11.11 to 11.14, see pages 543–544; and for 11.15 and 11.16, see page 544.
11.4 Describing a multiple regression.
As part of a study, data from 55 Fortune 500 companies were obtained.4 Based on these data, the researchers described the relationship between a company’s annual profits and the age and facial width-to-height ratio of its CEO.