An article in Psychology and Marketing describes four variables that have been found to impact the effectiveness of commercials for high-performance auto- mobiles: sincerity, excitement, ruggedness, and sophistication.24 Suppose that the following data are available on commercials' effectiveness and these variables, all on appropriate scales.
|
Commercial Effectiveness
|
AssessedSincerity
|
AssessedExcitement
|
AssessedRuggedness
|
AssessedSophistication
|
|
75
|
12
|
50
|
32
|
17
|
|
80
|
10
|
55
|
32
|
18
|
|
71
|
20
|
48
|
33
|
16
|
|
90
|
15
|
57
|
32
|
15
|
|
92
|
21
|
56
|
34
|
19
|
|
60
|
17
|
42
|
33
|
14
|
|
58
|
18
|
41
|
30
|
16
|
|
65
|
22
|
49
|
31
|
18
|
|
81
|
20
|
54
|
30
|
19
|
|
90
|
14
|
58
|
33
|
11
|
|
95
|
10
|
59
|
31
|
12
|
|
76
|
17
|
51
|
30
|
20
|
|
61
|
21
|
42
|
29
|
11
|
Is there a regression relation here between commercial effectiveness and any of the independent variables? Explain.