What is cp and cpk

Question

What is cp and cpk

Accepted Answer

Cp and Cpk are statistical process capability indices used to measure the ability of a process to produce products within specification limits.

Cp measures the potential capability of a process, while Cpk measures the actual capability of a process.
Both indices are calculated using the process mean, standard deviation, and specification limits.
A Cp or Cpk value of 1 indicates that the process is capable of producing products within specification limits.
Higher values indicate greater capability, with a Cp or Cpk value of 2 or more considered excellent.
Cpk takes into account the deviation of the process mean from the target value, while Cp does not.

Accepted Answer

Cp and cpk commonly referred to as process capability indices

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