Quantitative Measures Data
To carry out a validation study, an I/O psychologist is developing a regression equation from data collected from those hired two years ago. Specifically, the I/O psychologist is examining the relationship between extraversion, cognitive skills, and communication ability on sales performance (the dependent measure). The data are shown below.
|
Extraversion
|
Cognitive Skills
|
Communication Ability
|
Sales Performance $
|
|
6
|
10
|
19
|
21000
|
|
5
|
10
|
14
|
21000
|
|
5
|
8
|
14
|
22000
|
|
3
|
7
|
13
|
15000
|
|
7
|
14
|
16
|
22000
|
|
4
|
9
|
11
|
17000
|
|
6
|
9
|
15
|
28000
|
|
5
|
9
|
10
|
19000
|
|
5
|
11
|
20
|
16000
|
|
5
|
10
|
17
|
18000
|
Currently, the same I/O psychologist must make a decision about which two applicants to hire for sales positions. There are 10 applicants for the position, who completed quantitative measures on the same predictors above.The data are shown below.
|
Applicant
|
Extraversion
|
Cognitive Skills
|
Communication Ability
|
|
John Smith
|
5
|
9
|
17
|
|
Jane Doe
|
4
|
6
|
11
|
|
Burt McIntyre
|
7
|
13
|
19
|
|
Elizabeth Reddin
|
3
|
5
|
7
|
|
James Golstein
|
6
|
12
|
15
|
|
Shawn George
|
4
|
10
|
7
|
|
Susan Williams
|
3
|
6
|
8
|
|
Jose Valencia
|
5
|
10
|
12
|
|
Levi Ogletree
|
6
|
14
|
20
|
|
Pat Sylvester
|
2
|
8
|
6
|