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Gain sharing and lean Six Sigma are highly complementary systems that are mutually reinforcing. While both efforts are excellent by themselves in improving productivity, quality, and a variety of other measures, they are much more powerful together. Both systems are based on the principles of…
Aditya Bhalla
The Six Sigma journey of many organizations has morphed into “lean Six Sigma” during the past couple of years.
While the fusion of two methodologies has yielded benefits, it has also spawned a number of urban legends on the context and relevance of combining the two methodologies.
What…
Tim Leary
Story update 11/23/2010: A paragraph was added to the end of this case study to reflect the current state of the company's quality initiatives.
Acme Technology Services (not their real name) is a privately-held provider of technology-enabled business solutions. Acme’s retail software division…
Jay Arthur—The KnowWare Man
After a meal at a local Chinese restaurant, my fortune cookie said, “If you keep too busy learning the tricks of the trade, you may never learn the trade.” When I think about how this applies to Six Sigma, it seems obvious that far too much Six Sigma training is dedicated to the tricks of the…
Davis Balestracci
The economy has become a convenient excuse on which to pin the blame for everything—especially job losses. Well, in the case of quality positions, yes… and no.
A sobering thought: Will the Pareto principle (the 80/20 rule) inevitably apply to the quality profession? I think so. It’s time to “…
Jon Miller
For a group of people who claim to practice management by fact, questioning the as-given condition, we in the lean community have a troubling habit of citing and accepting made-up lean enterprise statistics. In fact, I would say that at least 50 percent of statistics cited about lean have been…
WILLIAM SCHERKENBACH
I’ve spent most of the past two years living in China where I have learned much on how enterprise is managed over there. Many people have said that this century belongs to Asia. That may be, but they have a lot to learn and change before that happens. They cannot depend on cheap rote labor to…
Donald J. Wheeler
The four questions of data analysis are the questions of description, probability, inference, and homogeneity. Any data analyst needs to know how to organize and use these four questions to be able to obtain meaningful and correct results.
The description question
Given a collection of…
Knowledge at Wharton
“Lean” has come to mean an integrated, end-to-end process viewpoint that combines the concepts of waste elimination, just-in-time inventory management, built-in quality, and worker involvement supported by a cultural focus on problem solving. Can such practical principles be applied to innovation…
Steven Ouellette
You know how sometimes you think everyone knows a secret that they haven’t let you in on? Well, I had the opposite happen to me the other day. I assumed everyone knew the purpose for measurement system analysis (MSA), a.k.a. gauge repeatability and reproducibility; but I found out that a number of…
Minitab LLC
Kaj Ahlmann (right), owner of the Six Sigma Ranch, Vineyards, and Winery, and vineyard manager, David Weiss, create great wines by applying old-world techniques and the rigor of proven quality improvement.
Some people take it easy when they retire. But Kaj…
Malcolm Chisholm
I have just finished rereading Walter A. Shewhart's 1939 book Statistical Method from the Viewpoint of Quality Control (Dover Publications, 1986). Mine is the 1986 edition, which has a foreword by W. Edwards Deming. Shewhart, a Bell Labs man, pioneered quality control and was a major inspiration…
Scott Alamanach
Sometimes when studying something that has become too familiar to us, we can gain valuable new insights by looking at it from a radically different perspective. Much has been written, for example, about how important customer service is for business—so much, in fact, that it becomes easy to lose…
Stewart Anderson
Last week I had occasion to view once again, in the company of a client, the excellent little video, “Toast Kaizen,” produced by the Greater Boston Manufacturing Partnership (GBMP)1, and narrated by Bruce Hamilton. In that video, Hamilton takes a simple everyday process, that of making toast, and…
John David Kendrick
A common error of many Six Sigma and operations research professionals is not properly selecting the correct subgroup sampling technique when constructing a statistical process control (SPC) chart. Incorrect subgroup sampling technique selection has become worse in the modern computing age,…
Mike Richman
Here at Quality Digest, we get a lot of mail: Some of it’s critical, some of it’s praiseworthy, some of it’s cantankerous, and some of it’s challenging. All of it is insightful. And then, every once in awhile, something comes along that simply... well...
The following was sent to us from a…
Tripp Babbitt
I have identified myself as a “reformed” lean Six Sigma Master Black Belt. Some will see this as an affront to lean and Six Sigma. I want to assure you that there are many things to like about lean and Six Sigma. The issue at hand is that a better solution is available that can help organizations…
Forrest Breyfogle—New Paradigms
Lean, lean Six Sigma, total quality management (TQM), and other techniques have helped companies improve processes through the execution of projects. However, much of these efforts have resulted in siloed process improvements that don't benefit the enterprise as a whole.
To illustrate this…
Jon Miller
I was flipping through some Japanese books on sayings and speeches given by Taiichi Ohno looking for inspiration for a new article when I found the following passage:
“Within the Toyota Production System, a lack of ability to do kaizen becomes a critical flaw. Does this mean that if you do…
Tom Gaskell
If you are buying two or three complex assemblies per month from a contract manufacturer, it would be reasonable to check every one carefully; there’s a lot that could go wrong. However, if you are buying 100,000 simple subassemblies per month it makes no sense for you to 100-percent check them…
Jon Miller
I became aware of a truth about lean problem solving and kaizen yesterday while reading an article about 10 internet rules and laws, “Internet rules and laws: the top 10, from Godwin to Poe,” published on the Daily Telegraph’s web site (www.telegraph.co.uk).
4. Skitt’s Law…
Donald J. Wheeler
I
n the past there was only one criterion required to be a good supplier: you had to ship very few nonconforming items. If your proportion of nonconforming items took a turn for the worse then you would be “in trouble,” and you would stay in trouble until your fraction nonconforming dropped…
Forrest Breyfogle—New Paradigms
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ix Sigma and lean provide tools for process improvement. Most of today’s business improvement programs can trace their roots back to a lean or a Six Sigma heritage. In general, these process improvement methodologies are considered advances from total quality management (TQM) and other methods…
Forrest Breyfogle—New Paradigms
The financials of an enterprise are a result of the integration and interaction of its processes, not of individual procedures in isolation. Using a whole-system perspective, one realizes that the output of a system is a function of its weakest link or constraint. If you're not careful, you can be…
Jay Arthur—The KnowWare Man
At the 2009 National Association for Healthcare Quality conference, I gave a speech on lean Six Sigma simplified. At the end of the session, one of the attendees asked, "If Six Sigma is so easy, why isn’t everyone doing it?" My answer: Because we’ve made it too complicated, expensive, and hard…
