Questions from Total Quality Management

Q: What are statistical tolerance limits? Explain how they differ from natural

What are statistical tolerance limits? Explain how they differ from natural tolerance limits.

Q: Is it possible for a process to be in control and still

Is it possible for a process to be in control and still produce nonconforming output? Explain. What are some corrective measures under these circumstances?

Q: What are the advantages of having a process spread that is less

What are the advantages of having a process spread that is less than the specification spread? What should the value of Cp be in this situation? Could Cpk be here?

Q: Compare the capability indices Cpk, Cpm, and Cpmk and discuss

Compare the capability indices Cpk, Cpm, and Cpmk and discuss what they measure in the process. When would you use Cpq?

Q: Discuss the indices for measuring quality costs. Give examples where each

Discuss the indices for measuring quality costs. Give examples where each might be used.

Q: What condition must exist prior to calculating the process capability? Discuss

What condition must exist prior to calculating the process capability? Discuss how process capability can be estimated through control charts.

Q: Suppose that the time to complete a project is the sum of

Suppose that the time to complete a project is the sum of several independent operations. If the means and standard deviations of the independent operations are known, determine the mean and standard...

Q: Suppose that the dimension of an assembly has to be within certain

Suppose that the dimension of an assembly has to be within certain tolerances. Discuss how tolerances could be set for the components given that the difference between two component dimensions compris...

Q: Discuss the advantages and disadvantages of sampling.

Discuss the advantages and disadvantages of sampling.

Q: Compare and contrast chain sampling and sequential sampling plans. When are

Compare and contrast chain sampling and sequential sampling plans. When are they used?