Process Capability Analysis Cpk: Webinar For a True Understanding of this Six Sigma Metric

Process capability analysis Cpk is a Six Sigma metric that needs more than a simple equation explanation.  The webinar below provides a detailed explanation of how to calculate Cpk process capability index and the implication of the metric.

Cpk is to provide a process capability index metric that is to quantify the spread of a process relative its tolerance spread with consideration of the closest tolerance limit.

where USL is upper specification limit, LSL is lower specification limit, mu is mean, and sigma is standard deviation.

The equation for calculation is simple; however, there is often much confusion about the details of the calculation and its implication; e.g., how to determine standard deviation from various data sources?

 

process capability analysis cpk standard deviation

 

For a description of Cpk equations, issues, and what could be done to resolve these issues, CLICK HERE.

WEBINAR: Process Capability Analysis Cpk — Understanding the Calculation and its Implication

Have you always liked capability metrics, such as Cp and Cpk, and wondered what they really said? Well maybe you are not loosing sleep over this issue, but like many statistics, capability metrics are used without a full understanding of their message.

View this webinar and continue your process improvement knowledge as we discuss each of these three questions. We will focus on the application rather than the theory of these capability metrics. Yes, there will be equations and such, but only in regards to explaining the concepts.

 

 

Process Capability Analysis Cpk: There is a Better Way!!

Traditional process capability has issues, as described in “Resolving Process Capability Index Issues For Cp, Cpk, Pp, Ppk.” This article and the webinar mentions 30,000-foot-level reporting.

In lieu of calculating process capability analysis Cpk and other process capability indices, a 30,000-foot-level metric reporting provides many benefits.

A 30,000-foot-level report-out provides:

  • Process stability assessment and capability statement, if process is stable, in one chart.
  • High-level assessment of process stability, where chart(s) is staged if process response has changed.
  • If a process has a recent region of stability, a process capability statement is provided at the bottom of the chart.
  • When the process is stable, the process capability statement is a futuristic statement; i.e., if the capability statement is not desirable, the associated process needs improvement.
  • Process capability statement uses words at the bottom of the chart that are easy to understand; e.g., estimate 4.7% non-conformance.
  • A process capability statement can be made even when no specification exists; e.g., the median response is estimated to be 95 and 80% of the measurements are expected to be between 90 and 100.
  • A process capability statement that is easy to understand, even if data needs a normalizing transformation.

The Integrated Enterprise Excellence (IEE) business management system provides, among other things, 30,000-foot-level metrics that can be in alignment with the processes that create them throughout an organization.

IEE addresses the business scorecard and improvement issues described in a 1-minute video:

 

process capability analysis cpk video

 

Contact Us to set up a time to discuss with Forrest Breyfogle how your organization might gain much from an Integrated Enterprise Excellence (IEE) Business Process Management System and enhancement to process capability analysis Cpk.