Consider a process that is centered at nominal. The manufacturing specifications are: nominal is 'a' and tolerance is 'plus or minus a/8'. Which of the following Cpk values reflects the largest process standard deviation?

Consider a process that is centered at nominal. The manufacturing specifications are: nominal is 'a' and tolerance is 'plus or minus a/8'. Which of the following Cpk values reflects the largest process standard deviation?



a. 1.0

b. 1.5

c. 2.0

d. 2.5



Answer: a. 1.0


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