Since it is a joy to have the benefit of what is good, it is a greater one to experience what is better.
- Goethe -
Capability Process Index (Cp)
This is a technique for making a ratio of the specification width (the range within which an output is considered to meet specification) in relation to the process's natural distribution for assessing whether the process can regularly meet specifications. Process capability is used to determine which processes are not capable of meeting specifications, to identify those processes operating suboptimally, and to estimate the output proportion that will not conform to specifications.