Reconsider the data in Exercises 10 5 and 10 6 Suppose the
Reconsider the data in Exercises 10.5 and 10.6. Suppose the process measurements are individual data values, not subgroup averages.
In Exercise 10.5
(a) Use observations 1-20 in Exercise 10.5 to construct appropriate group control charts.
(b) Plot observations 21-30 from Exercise 10.6 the charts from part (a). Discuss your findings.
(c) Using observations 1-20, construct an individuals control chart using the average of the readings on all four heads as an individual measurement and an s control chart using the individual measurements on each head. Discuss how these charts function relative to the group control chart.
(d) Plot observations 21-30 on the control charts from part (c). Discuss your findings.
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