The process capability index (C_pk)may mislead if (I)the process is not stable.(II)the process output is not normally distributed.(III)the process is not centered.

Question

Quizplus · Accepted Answer

The process capability index can indeed be misleading if the process is not stable, the process output is not normally distributed, or the process is not centered. Stability is crucial for the index to reflect true capability, normal distribution is often assumed in the calculation of capability indices, and centering affects the calculation of indices like Cp and Cpk, which measure how well a process can produce output within specification limits.

The Process Capability Index (Cpk)may Mislead If

The Process Capability Index (C_pk)may Mislead If