Operations Management: Processes and Supply Chains (12th Edition) (What's New in Operations Management)
12th Edition
ISBN: 9780134741062
Author: Lee J. Krajewski, Manoj K. Malhotra, Larry P. Ritzman
Publisher: PEARSON
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Textbook Question
Chapter 8, Problem 4P
A manufacturing firm has developed a skills test, the scores from which can be used to predict workers’ production rating factors. Data on the test scores of various workers and their subsequent production ratings are shown.
- Using POM for Windows’ least squares-linear regression ¡nodule, develop a relationship to
forecast production ratings from test scores. - If a worker’s test score was 80, what would be your forecast of the worker’s production rating?
- Comment on the strength of the relationship between the test scores and production ratings.
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A manufacturing firm has developed a skills test, the scores from which can be used to predict workers’ production rating factors. Data on the test scores of various workers and their subsequent production ratings are shown.a. Using POM for Windows’ least squares-linear regression module, develop a relationship to forecast production ratings from test scores.b. If a worker’s test score was 80, what would be your forecast of the worker’s production rating?c. Comment on the strength of the relationship between the test scores and production ratings.
a. Using POM for Windows' least squares-linear regression module, develop a relationship to forecast production ratings from test scores. (Round your responses to three decis
and include a minus sign if necessary.)
Y= - 23 + .945 x
where Y = Production rating and X = Test score.
b. If a worker's test score was 54, what would be your forecast of the worker's production rating? 51. (Enter your response as an integer.)
c. Comment on the strength of the relationship between the test scores and production ratings.
The coefficient of correlation for the least-squares regression model is
and the coefficient of determination is
(Enter your responses rounded to three decimal places.)
More info
Test
Score
Production
Rating
Production
Test
Worker
Worker
Rating
Score
A
55
43
K
58
57
B
38
43
75
75
93
87
67
48
D
86
77
31
26
E
88
82
62
49
F
66
68
24
25
G
55
47
Q
78
84
Clear all
Check
50
46
34
32
41
41
51
58
J
69
74
T
39
30
Print
Done
LLMN OPoRS
Calculate a regression line for the data and indicate the forecast of sales for a store with advertising spending of R240,000? and R300,000?
Store
Advertising
Sales
1
14
6
2
11
3
3
15
5
4
16
5
5
24
15
6
28
18
7
22
17
8
21
12
9
26
15
10
43
20
11
34
14
12
9
5
Chapter 8 Solutions
Operations Management: Processes and Supply Chains (12th Edition) (What's New in Operations Management)
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