X-bar Control Chart and Capability Index in Excel
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Pieces 12.62 12.63 12.62 12.61 12.59 12.57 12.57 12.58 12.61 12.62
12.6 12.56 12.56 12.66 12.58 12.63 12.56 12.57 12.6 12.59
12.62 12.6 12.57 12.62 12.57 12.6 12.61 12.6 12.62 12.62
12.61 12.59 12.58 12.61 12.59 12.6 12.59 12.6 12.6 12.59
12.65 12.6 12.63 12.6 12.56 12.59 12.59 12.61 12.65 12.56
Questions 1 Identify the type of data
2 Determine the process capability
3 Determine the 3 sigma limits for X bar chart
4 Is the machine capable of meeting the specification requirements
5 Calculate the percentage defective, if any
6 Suggest possible ways by which the percent defective can be reduced
Assumptions
1 Normal distribution
2 d2 for group size 5 is 2.326
1. variable data
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Solution Summary
For a given data set, Excel is used to calculate an X-Bar Control Chart and Capability Index. In addition, an image of histogram is provided to support skewing of the data.
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Student,
Key to any capability index is the specificaton limits of the parts being produced. Your example gave ...
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