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 s
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 ab