Is 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 not?
Answer to relevant QuestionsConsider the control chart shown in Exercise 5.17. Would the use of warning limits reveal any potential out-of-control conditions? A car has gone out of control during a snowstorm and struck a tree. Construct a cause-and-effect diagram that identifies and outlines the possible causes of the accident. What is meant by a process that is in a state of statistical control? Consider the piston ring data shown in Table 6.3. Assume that the specifications on this component are 74.000 0.05 mm. (a) Set up x and R control charts on this process. Is the process in statistical control? (b) The ...Consider the x and R charts you established in Exercise 6.7 using n = 5. (a) Suppose that you wished to continue charting this quality characteristics using x and R charts based on a sample size of n =3. What limits would be ...
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