Show that if = 2/(w + 1), then the average “ages” of the data used in computing the statistics zi and Mi are identical.
Answer to relevant QuestionsShow how to modify the control limits for the moving average control chart if rational subgroups of size n > 1 are observed every period, and the objective of the control chart is to monitor the process mean. Set up an appropriate EWMA control chart for the valve failure data in Example 7.6. Use the transformed variable approach illustrated in that example. Use the data in Table 10E.1 to set up short-run charts using the DNOM approach. The nominal and x R dimensions for each part are TA = 100, TB = 60, TC = 75, and TD = 50. Consider the molecular weight data in Exercise 10.16. Construct a CUSUM control chart on the residuals from the model you fit to the data in part (c) of that exercise. Let 0 = 0, = 1 sigma, k = 0.5, h = 5. In Exercise ...Consider the temperature data in exercise 10.24. Set up a CUSUM control chart on the residuals from the model you fit to the data in part (c) of that exercise. Compare it to the individuals chart you constructed using the ...
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