Metrics that Trigger Actionable Discussions: Prioritize Process Improvements Using Gauge R&R and SPC Capability
Integrating tools like FMEA, GR&R, and SPC provides a quality improvement framework for monitoring process health and prioritizing improvements. An eight-step model begins with documenting quality characteristics and leads to the creation of a “process health card.”
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Updated December 13, 2007

Axiomatic Design and DFSS
AD is a structured approach to performance improvement for complex systems that is useful in the concept, preliminary and detail design stages of the systems engineering model.
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Updated March 6, 2006

Cpk vs. Ppk
Understanding the concept of "long-term" versus "short-term" variation is crucial to obtaining valid results from capability studies.
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Updated April 28, 2005

Capability Analysis with Non-Normal Data
This article addresses strategies to obtain meaningful capability estimates using continuous data when the assumption of sampling from a Normal distribution may be invalid.
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Updated March 7, 2005

Randomization in Designed Experiments
The third and final article in a series on misconceptions regarding designed experiments, this discussion shows that neglecting randomization can lead to incorrect conclusions.
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Updated December 1, 2004

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