Question

What does the C_pk (process capability) index number mean for the average worker and manager toiling in different countries and cultures in different economic, political and social environments and contexts?

Answer 1

C_pk is the Process Capability Index is a statistical tool to measure the ability of a process to produce output within consumer's Specification Limits. C_pk is a standard index to state the capability of one process, the higher the C_pk index value the better the process is. C_pk is used to estimate how close we are to a given target and how consistent we are to around our average performance. C_pk that is less than 1.33 needs some action to make it higher. C_pk less than 1.0 means that the process is not capable of meeting its requirements. The standard C_pk level is 2.0 for a process in six sigma quality control. C_pk tells us what the process is capable of doing in future, assuming it remains in a state of statistical control.