Are there different Cpk formula's? | Adopting the Cpk formula for unilateral tolerance

Another answer to a viewer's question: are there different Cpk formula's for bi-lateral tolerance vs unilateral tolerance? and what if you've got a target value that's not in the middle of your specification limits?
There is no different formula, but... There is a difference in how you use the formula - a way to decide which numbers to plug into the formula and a special way to calculate the standard deviation.
#sixsigma #continuousimprovement #cpk