Understanding and enhancing process capability Cpk reporting is important for the creation of successful process output and business measures. An Integrated Enterprise Excellence (IEE) approach to reporting process capability metrics via 30,000-foot-level predictive-process-output-response reporting offers many benefits over traditional process capability indices reporting.
Understanding and Enhancing Process Capability Cpk Reporting Details
Cpk is one of many capability metrics that are available. When capability metrics are used, organizations typically provide a Cp and a Cpk report-out, where the standard deviation for the calculation is dependent upon how the data are acquired:
The PDF white paper provided below discusses the mechanics of Cp and Cpk process capability metrics, along with the pros and cons.
This article describe how Cpk could provide insight on performance to a requirement if the process data used in the calculation comes from a normal distribution. If the process data is non-normal or it is the result of a combination of processes (a mixture of processes) then it provides an underestimation of the true non-conformance capability.
However, organizations benefit when they use the IEE business management system alternative 30,000-foot-level reporting approach which provides a capability in easier to understand wording and is not dependent upon how the data are collected. Also, in a business management system these high-level performance measurements can be linked structurally to the processes that created them through an IEE value chain.
Contact Us to set up a time to discuss with Forrest Breyfogle how your organization could gain much from an IEE approach alternative to traditional process capability cpk reporting.