![]() ![]() ![]() After a process has reached statistical control, use Cp & Cpk. Note: use Pp & Ppk when you are initially setting up your process. Process Capability & Performance (Pp, Ppk, Cp, Cpk) Overview.If you’d like more depth including calculations, etc, see these articles: In other words, how distributed the outcome of your process is vs what the requirements are. How do you know if your process is capable? Process Capability Pp measures the process spread vs the specification spread.
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