This example illustrates how you can use the OUTPUT statement to compute confidence limits for the capability index C pk. You can request the approximate confidence limits given by Bissell (1990) with ...
it follows that an estimate of CPU is 1.7 / 3 = 0.57, and an estimate of CPL is 1.8 / 3 = 0.6. Thus, except for a factor of three, you can estimate CPU and CPL from the points of intersection between ...