Statistics paper (for Psychology course)-revised

psy838.r.quantitativemeasuresdata_11-08-2012.docx

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College of Doctoral Studies

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