The process capability measures C_p and C_pkdiffer because A) only one ensures the process mean is centered within the limits. B) C_p values above 1 indicate a capable process, C_pkvalues above 2 indicate a capable process. C) both are identical. D) C_p values for a given process will always be greater than or equal to C_pkvalues. E) C_pkvalues for a given process will always be greater than C_p values.

Question

Quizplus · Accepted Answer

C_p measures the process capability in terms of the distribution of individual values within the specification limits, while C_pk takes into account the process mean and the variation of individual values. Therefore, only C_pk ensures that the process mean is centered within the limits.

The Process Capability Measures Cp and Cpk differ Because

The Process Capability Measures C_p and C_pkdiffer Because