Babybots HRM634 Week 5 Assignment

You just became the head of staffing for BabyBots, a manufacturer of small robots. You were surprised to learn that the company had never validated the manual dexterity test it uses to assess job candidates for its manufacturing jobs. You decided to do a concurrent validation study and administered the test to 30 manufacturing workers. Their scores are reported in Table 8-4, along with their ages, sex, race, and job performance ratings. You also calculated the correlation between the manual dexterity test and job performance to assess the test’s validity. You then examined the relationship between employees’ test scores and their performance ratings. The results of this analysis are shown in Tables 8-5

Table 8-4 Dexterity Test

Employee	Sex	Race	Age	Test Score	Performance Rating
1	0	0	35	36	90
2	0	1	32	44	95
3	1	0	44	50	95
4	0	2	42	49	93
5	1	2	36	46	89
6	0	1	33	52	94
7	0	1	45	50	92
8	0	0	48	50	93
9	1	2	34	42	83
10	1	2	46	44	89
11	1	0	30	40	87
12	1	0	39	48	95
13	1	2	31	47	90
14	0	1	49	39	80
15	1	0	47	48	92
16	1	1	40	38	79
17	0	0	44	38	80
18	0	1	33	36	72
19	1	0	43	46	89
20	1	0	36	48	92
21	1	1	22	46	89
22	0	2	28	32	70
23	1	2	19	48	94
24	0	2	23	48	94
25	0	2	27	36	74
26	1	1	18	46	85
27	1	1	26	44	79
28	0	1	21	50	95
29	0	2	23	34	70
30	1	1	28	44	83
Mean			34.07	43.97	86.73
SD			9.33	5.54	7.91
Min			18.00	32.00	70.00
Max			49.00	52.00	95.00
Range			31.00	20.00	25.00
Performance rating: 0 = 0% efficiency, 100 = 100% efficiency
Sex: 0 = male; 1 = female
Race: 0 = Hispanic; 1 = White; 2 = Black

Table 8-5 Correlation Table

Age

Sex

Males (0)

Race

Hispanic (0)

Age	Test	Job Performance
Age 1.00
Test	0.12	1.00
Job Performance	0.18	0.86	1.00
Note: Correlations underlined and in bold indicate statistical significance at a level of p < .05.
Sex Above 43	Total Count	Percent
Males (0) 7	14	50.00
Females (1)	13	16	81.25
Total	20	30	66.67
Race Above 43	Total Count	Percent
Hispanic (0) 6	9	66.67
White (1)	8	11	72.73
Black (2)	6	10	60.00
Total	20	30	66.67

Questions:

1. What kind of relationship exists between employees’ scores on the manual dexterity test and their performance ratings?

2. Suppose a candidate scored 44 on the manual dexterity test. The regression equation predicting job performance using the manual dexterity test is:

32.465 + (1.234 ´ Manual dexterity test score)

What is the candidate’s predicted job performance?

3. Assume that only candidates with predicted performance above 85 are to be hired. This translates to a score of at least 43 on the manual dexterity test. Assume only those with scores above 43 were hired (20 of the 30 people in this sample). Would the use of this test have led to evidence of adverse impact based on sex or race? The relevant data on the 20 people exceeding the cutoff are above in Table 8-6. Show your computations for adverse impact and then explain why adverse impact exists or not.

4. Given the validity results you found, would you recommend use of this test as a selection device? If so, how would you use it?