1.Why are X and R-charts usually used hand in hand?
2.What does it mean for a process to be "capable"?
3.What is the difference between the process capability ratio Cp and the process capability index Cpk?
4.A process is operating in such a manner that the mean of the process is exactly on the lower specification limit. What must be true about the two measures of capability for this process?
5.What is acceptance sampling?