Hi, Do anyone there have an experience to set organizational (plant)
Cpk goals using Confidence Interval and/or hypothesis testing?
Most places use just point estimates for Cpk but in the liturature
(like classic Montgomery SPC book) confidence interval approach is
described.
I'd like to hear
Boris,
there are lots of ways to use different statistically calculated
numbers. I am suspicious, nonetheless, that your concept of a plant wide
goal for Cpk, either as a point estimate or as a confidence interval,
will not let you reach the larger goal you seek.
One can manipulate the math to
