Six Features

Bill Kalmar's picture
Bill Kalmar
My wife Mary has an obsession—she always checks the expiration and freshness dates on food products that we purchase. Mary also marks purchase dates on products such as ketchup, mustard, and salad...
George Chemers's picture
George Chemers
Although information is readily available about applying team-building techniques to Six Sigma projects, there’s not much about how learning styles affect the success of Six Sigma teams. Knowing...
Matthew Barsalou's picture
Matthew Barsalou
I gave a rather successful talk on communicating design of experiments (DoE) at the recent ENBIS 14 conference in Linz, Austria. Things went mostly well, but it’s also fair to say many attendees...
Barry Johnson's picture
Barry Johnson
The adage “if you aren’t moving forward, you’re falling behind” is true more often than not. Regardless of the type of business, all organizations need to improve to survive. The last words uttered...
Donald J. Wheeler's picture
Donald J. Wheeler
The best analysis is the simplest analysis that provides the needed insight. Of course this requires enough knowledge to strike a balance between the needed simplicity and unnecessary complexity....
Dan Somers's picture
Dan Somers
As a person working in quality manufacturing, it’s probably in your DNA to look at a quality challenge and  choose Six Sigma or something similar as the framework for getting to the answer. It...
Darin Marcuz's picture
Darin Marcuz
This article describes a novel approach to calculating the financial aspect of overall equipment effectiveness (OEE), with the result referred to as $EE (as in monetary units). By using $EE, a...
Eston Martz's picture
Eston Martz
When we take pictures with a digital camera or smartphone, what the device really does is capture information in the form of binary code. At the most basic level, our precious photos are really...
Donald J. Wheeler's picture
Donald J. Wheeler
Story update 9/8/2015: There was an error in the data set for columns "Skew" and "Kurt" in figure 7. The error has been corrected. Clear thinking and simplicity of analysis...
Quality Transformation With David Schwinn's picture
Quality Transformation With David Schwinn
I recently had a dream in which Adrian Bass, a colleague and friend for whom I have much admiration, asked me why I still care about quality management after all these years. You can substitute...
Fred Schenkelberg's picture
Fred Schenkelberg
Just, please, plot the data if you have gathered some time-to-failure data, or you have the breakdown dates for a piece of equipment. Any data really. It could be your review of your car...
Eston Martz's picture
Eston Martz
Statisticians say the darnedest things. At least, that’s how it can seem if you’re not well-versed in statistics. When I began studying statistics, I approached it as a language. I quickly noticed...
Gorur N. Sridhar's picture
Gorur N. Sridhar
Quality and Six Sigma are often considered as links in a chain. For example, when quality is poor, many times the immediate response is, “Let’s improve it using Six Sigma.” But does Six Sigma...
Joel Smith's picture
Joel Smith
Just 100 years ago, very few statistical tools were available and the field was largely unknown. Since then, there has been an explosion in available tools, as well as ever-increasing...
John Flaig's picture
John Flaig
I have discussed the economics of project management numerous times in presentations all over the country, and based on the response to my message, I have to conclude that many people just don...
Donald J. Wheeler's picture
Donald J. Wheeler
Some commonly held ideas about skewed probability models are incorrect. These incorrect ideas are one source of complexity and confusion regarding the analysis of data. By examining the basic...
Quality Transformation With David Schwinn's picture
Quality Transformation With David Schwinn
This month’s column was prompted by an especially thoughtful commencement address by Michael Ward, reproduced in the May/June 2015 issue of Imprimis (Hillsdale College). Ward, of course, encouraged...
Eston Martz's picture
Eston Martz
If you’ve read the first two parts of this tale, you know it started when I published a post that involved transforming data for capability analysis. When an astute reader asked why Minitab didn‘t...
Eston Martz's picture
Eston Martz
In my last post, I told you how I had double-checked the analysis in a post that involved running the Johnson transformation on a set of data before doing normal capability analysis on it. A reader...
Eston Martz's picture
Eston Martz
I don’t like the taste of crow, which is a shame, because I’m about to eat a huge helping of it. I’m going to tell you how I messed up an analysis. But in the process, I learned some new...