The statistical definition of Six Sigma allows for 3.4 defects per million. This is achieved by a C_pk index of A) 0 B) 1 C) 1.33 D) 1.67 E) 2

Question

Quizplus · Accepted Answer

The C_pk index calculates the number of standard deviations between the mean and the nearest specification limit. A value of 2 corresponds to a process that can produce Six Sigma quality (3.4 defects per million) as it indicates a distance of 6 standard deviations between the mean and the nearest specification limit (2 x 3 = 6). Therefore, the best choice is E.

The Statistical Definition of Six Sigma Allows for 3