Which of the following is TRUE regarding the process capability index Cpk?
A) A Cpk index value of 1 is the highest possible.
B) The larger the Cpk, the fewer units meet specifications.
C) The Cpk index can only be used when the process centerline is also the specification centerline.
D) Positive values of the Cpk index are good; negative values are bad.
E) Its value will always be less than or equal to the Cp value for the same process.
Correct Answer:
Verified
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