For statistical process control,a good sampling method should always:
A)require frequent sampling.
B)minimize sampling cost.
C)maximize sample size.
D)use rational sub-groups.

Question

Quizplus · Accepted Answer

The most important criterion for a good sampling method in statistical process control is to use rational sub-groups. Rational sub-groups refer to selecting samples in such a way that they represent the same process or production unit. This helps to ensure that the variation observed in the samples is due to the process itself and not due to external factors. While frequent sampling, minimizing sampling cost, and maximizing sample size are important considerations, they are not as critical as using rational sub-groups.

For Statistical Process Control,a Good Sampling Method Should Always