i. Suggest an appropriate control chart and calculate the upper and lower control limits for the above process. Plot and label the control limits. ii. Plot the defects and evaluate the current performance of the painting process. Suggest any necessary action to be taken.
i. Suggest an appropriate control chart and calculate the upper and lower control limits for the above process. Plot and label the control limits. ii. Plot the defects and evaluate the current performance of the painting process. Suggest any necessary action to be taken.
Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter2: Introduction To Spreadsheet Modeling
Section: Chapter Questions
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Question
Inspections on 15 painted sheet metal plates were conducted in the painting line. The types of
defect were classified as blister, light spray, drips, overspray, splatter and runs. The defects
found on each plate are summarized in Table 2.1.
i. Suggest an appropriate control chart and calculate the upper and lower control limits for
the above process. Plot and label the control limits.
ii. Plot the defects and evaluate the current performance of the painting process. Suggest
any necessary action to be taken.
Transcribed Image Text:Table 2.1: Count of defects per metal plate.
Subgroup
Count of defects
Subgroup
Count of defects
1
1
9.
5
10
2
3
6.
11
1
4
3
12
4
5
13
5
6
4
14
7
7
15
9.
5
2.
2.
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