# Quality control: control limits and data analysis

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Statistics Quality Control

A. Determine the control limits for the mean and range

B. Plot the control limits for the mean Outside Diameter and the range

C. Are there any points on the mean or the range chart that are out of control? Comment on the chart.

See the attached question file for the data.

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#### Solution Summary

The following quality control problem involves working with a data set and demonstrates the process of determining and plotting control limits and evaluating whether data are out of the control limits. Graphs and an explanation of methodology are provided in the solution.

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