Apply the Western Electric rules to the control chart in Exercise 5.14. Are any of the criteria for declaring the process out of control satisfied?
Answer to relevant QuestionsApply the Western Electric rules to the control chart presented in Exercise 5.16. Would these rules result in any out-of-control signals? b. Estimate the process standard deviation. c. What are the limits that you would expect to contain nearly all the process measurements? Fifteen successive heats of a steel alloy are tested for hardness. The resulting data are shown in Table 5E.9. Set up a control chart for the moving range and a control chart for individual hardness measurements. Is it ...In exercise a. Estimate the potential capability. b. Estimate the actual capability. c. How much could process fallout be reduced by shifting the mean to the nominal dimension? Assume that the quality characteristic is normally ...
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