The process capability index (Cpk) may mislead if:
(I) the process is not stable.
(II) the process output is not normally distributed.
(III) the process is not centered.
A) I and II
B) I and III
C) II and III
D) II only
E) I, II, and III

Question

Quizplus · Accepted Answer

Cpk can be misleading if the process is not stable, not normally distributed, or not centered, as it assumes a stable, normal distribution and centered process for accurate capability assessment.

The Process Capability Index (Cpk) May Mislead If