Question: Rework Exercise 9 1 using a standardized CUSUM Exercise 9 1
Rework Exercise 9.1 using a standardized CUSUM.
Answer to relevant QuestionsApply the scale CUSUM discussed in Section 9.1.8 to the concentration data in Exercise 9.8. Exercise 9.8 Rework Exercise 9.1 using an EWMA control chart with = 0.1 and L = 2.7. Compare your results to those obtained with the CUSUM. = 25, CL = 0 = 1050, UCL = 1065.49, LCL = 1034.51 Reconsider the data in Exercise 9.8. Set up and apply an EWMA control chart to these data using = 0.05 and L = 2.6. 5.634, CL = 0 = 175, UCL = 177.30, LCL = 172.70. Show that if = 2/(w + 1) for the EWMA control chart, then this chart is equivalent to a w-period moving average control chart in the sense that the control limits are identical in the steady state. Discuss how you could set up one-sided EWMA control charts.
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