# Question

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 Questions

Consider 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 ...Post your question

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