What information is provided by the operating characteristic curve of a control chart?
Answer to relevant QuestionsIs the average run length performance of a control chart a more meaningful measure of performance than the type I and type II error probabilities? What information does ARL convey that the statistical error probabilities do ...Consider the time-varying process behavior shown below and on the next page. Match each of these several patterns of process performance to the corresponding and R charts shown in figures (a) to (e) below. Reconsider the situation in Exercise 5.32. Suppose that the process mean and variance were unknown and had to be estimated from the data available from the m subgroups. What complications would this introduce in the ...Rework Exercise 6.9 using the s chart. In Exercise 6. Reconsider the data presented in Exercise 6.21. (a) Rework both parts (a) and (b) of Exercise 6.21 using the x and s charts. (b) Does the s chart detect the shift in process variability more quickly than the R chart did ...
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