In SPC, the distribution of sample means:
A) can be approximated by the normal distribution.
B) will have greater variability than the process distribution.
C) will always have a mean greater than the process distribution because of the sample size.
D) cannot be used for control charts because the variability is understated.

Question

Quizplus · Accepted Answer

The Central Limit Theorem states that the distribution of sample means will approach a normal distribution, regardless of the underlying distribution of the process, as the sample size increases. Therefore, Choice A is correct.

In SPC, the Distribution of Sample Means