The data in the file P20_02.xlsx consist of 25 subsamples of 4 observations each on the diameters
Question:
The data in the file P20_02.xlsx consist of 25 subsamples of 4 observations each on the diameters (measured in centimeters) of ball bearings produced by a manufacturing process. The target diameter of these ball bearings is 4 centimeters.
a. Generate and interpret X and R charts for the given data. Based on these charts, does this manufacturing process appear to be in control?
b. Are there any other indications that the given process may be out of control? If so, explain.
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Subsample Value1 Value2 Value3 Value4 1 399 401 397 402 2 398 403 398 400 3 397 402 397 401 4 402 401 400 400 5 399 400 401 398 6 400 400 401 402 7 40...View the full answer
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Related Book For 
Business Analytics Data Analysis and Decision Making
ISBN: 978-1305947542
6th edition
Authors: S. Christian Albright, Wayne L. Winston
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