d2: More Than Just a Control Chart Constant
Perhaps the reader recognizes d2 as slang for “designated driver,” but quality professionals will recognize it as a control chart constant used to estimate short-term variation of a process.
Perhaps the reader recognizes d2 as slang for “designated driver,” but quality professionals will recognize it as a control chart constant used to estimate short-term variation of a process.
Last year I was invited to give a lecture on critical thinking to the U.S. Navy. I opened my presentation with a story I’d read in Reader’s Digest magazine as a child.
To most of us, the phrase “work that matters” infers job satisfaction. The outcome is lower stress, lower turnover, and higher productivity—in business, a win-win for employees, customers, and shareholders. The logic is infallible.
Our industry embodies many aspects, but “Big Q” quality generally involves issues affecting management, measurement, and methodologies. This week on QDL, we covered all of them, and more. Let’s look closer:
(ISO: Geneva) -- New technologies, from robotics to machine learning, are ushering in a period of rapid change and development.
To ask a good question requires two things: insight and gumption. The root of all worthy questions is a desire to fill in a gap in your understanding of something.
Story links for November 2, 2018
Ripped From the Headlines: Where mainstream meets quality
Assessing the Health of a Measurement System
Plus: An interview with Eric Gasper, PQ Systems
Webinar: The Importance of R&R Studies
Measurement devices in manufacturing facilities are as ubiquitous as Skittles in trick-or-treat bags. Some companies have thousands of devices in their inventories and depend on them to provide accurate information.
For manufacturers in diverse sectors such as automotive, aerospace, electronics, and medical device, there’s little question that ensuring great quality would be impossible without the proper testing of materials.
This story was originally published by Knowable Magazine.
© 2026 Quality Digest. Copyright on content held by Quality Digest or by individual authors. Contact Quality Digest for reprint information.
“Quality Digest" is a trademark owned by Quality Circle Institute Inc.