A process capability ratio reflects the number of (Z) sigmas included in the range between the upper and lower control limits.

Question

Quizplus · Accepted Answer

A process capability ratio, such as Cp or Cpk, takes into account the spread or variability of a process and compares it to the specification limits. The number of sigmas included in the range between the upper and lower control limits is also a measure of the process's capability or performance. Therefore, the statement is true.

A Process Capability Ratio Reflects the Number of (Z) Sigmas