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 C_pk values reflects the largest process standard deviation? A)1.0 B)1.5 C)2.0 D)2.5

Question

Quizplus · Accepted Answer

Cpk is calculated as the minimum of (USL - mean)/(3σ) and (mean - LSL)/(3σ). A lower Cpk value indicates a larger process standard deviation when the process is centered at nominal.

Consider a Process That Is Centered at Nominal