All Features
Stefan H. Steiner, R. Jock MacKay
In his February 2017 Quality Digest column, “Don’t We Need Good Measurements?” Donald J. Wheeler recommends that a measurement system contributing up to 80 percent of the overall variation (on the variance scale) is good enough to detect persistent mean shifts when using a process behavior (…
Kyle Pheland, Belinda Jones
Change is inevitable in every organization. Planned or not, forces inside and outside the enterprise can sometimes encumber a workforce and lead to nonvalue-added processes. Growing spurts, major technology implementations, or even small supply-chain organizational projects can present more issues…
Joel Bradbury
Healthcare professionals have a long history of caring for their patients and improving the quality of their services. During the Crimean War (1853–1856), British nurse Florence Nightingale realized that the mortality rate of soldiers was far too high. A visionary statistician as well as a…
GBMP
Ellis Medicine is a 438-bed community and teaching healthcare system serving New York’s capital region. With four main campuses, five additional service locations, more than 3,300 employees, and more than 700 medical staff, Ellis Medicine offers an extensive array of inpatient and outpatient…
Ryan E. Day
Sponsored Content
You might say what Henry Ford did for the automobile, GE, Siemens, and Mitsubishi have done for the gas and steam turbine industry. Naturally, the tools and technicians of both sectors have had to evolve right along with the challenges of new technology and the ever-increasing…
Peter J. Sherman
As organizations become successful and grow, uncertainty is generally the enemy. Thriving organizations seek to eliminate variation and increase efficiency. They identify best practices and policies, and design standard operating procedures. Such efforts can make a business wildly efficient at…
Afaq Ahmed, Yves Van Nuland
New technologies have empowered customers to seek out the best products and services at the lowest cost and shortest delivery times. Customers can compare price and delivery information as well as reviews about product quality. Thus, the importance of sustaining outstanding quality in order to…
Ken Levine
How do you determine the “worst case” scenario for a process? Is it by assuming the worst case for each process task or step? No. The reason is that the probability of every step having its worst case at the same time is practically zero. What we’re looking for is a value that will occur a very…
Jim Benson
We are all cursed with “surprises” at work. We come in, sit down, get ready for the day. We select a task to start on, and about halfway through, it explodes on us. The seemingly simple task now has 30 subtasks all lined up, ready to destroy our day.
This is stressful. Since we’re likely already…
Fred Schenkelberg
What if all failures occurred truly randomly? Well, for one thing the math would be easier.
The exponential distribution would be the only time to failure distribution—we wouldn’t need Weibull or other complex multi-parameter models. Knowing the failure rate for an hour would be all we would need…
Kimberly Watson-Hemphill, Kristine Nissen Bradley
Editor’s note: This is an excerpt from the new book, Innovating Lean Six Sigma, by Kimberly Watson-Hemphill and Kristine Nissen Bradley.
Like every company, healthcare businesses do their work through processes, and any process can be studied and improved using basic lean Six Sigma methods. Figure…
Matthew Barsalou
The start of a failure investigation may involve brainstorming, but empirical methods will be required to actually identify a problem's cause. Implementing an improvement action without a confirmed root cause risks a reoccurrence of the issue because the true root cause has yet to be addressed.…
Steve Daum
In daily conversations, I field questions from plant managers, quality managers, engineers, supervisors, and plant production workers about the challenges of applying statistical process control (SPC) methods. Following are the five most prevalent and costly mistakes I witness in the application…
George Chemers, Patricia Cronin
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 that the “people side” of an otherwise technical and statistical-based methodology is important to a…
Darin Marcuz, Laron Colbert
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 management team readily can “SEE” their operation in financial terms. Employees are then better able to…
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 just a bunch of 1s and 0s, but if we were to look at them that way, they'd be pretty unexciting.
In its…
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 maintenance records and notes and dates of repairs. You may have some data from field returns. You have a group…
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, or any other program for that matter, really improve quality? Or, are they simply mirrors to let us know…
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’t get it.
Let me again sound the wake-up call with a quote from V. S. Liebhold, co-author of the article…
Brian Maskell
T here are three ways in which a standard costing system is typically used in a manufacturing company:
1. Performance measurement 2. Decision making 3. Inventory valuation
From an accounting perspective, performance measurement and decision making are part of a company’s management accounting…
Fred Schenkelberg
Control charts provide an ongoing statistical test to determine if a recent reading or set of readings represents convincing evidence that a process has changed from an established stable average. The test also checks sample-to-sample variation to determine if the variation is within the…
Brian Maskell
It is vitally important for lean people to know nothing when working on improvement. This sounds like a crazy idea, but it is another 100-percent turnaround from traditional management thinking.
To do this, it’s necessary to do three things: • Understand how lean thinkers go about radically…
Rip Stauffer
Recently, in one of the many online discussion groups about quality, Six Sigma, and lean, this question was posed: “Can X-bar R and X-bar S be used interchangeably based on samples size (n) if the subgroup size is greater than one and less than eight?” Answers varied, of course.
In some of these…
Eston Martz
Last week I attended the American Society for Quality’s World Conference on Quality and Improvement in Nashville, TN. The ASQ conference is a great opportunity to see how quality professionals are tackling problems in every industry, from beverage distribution to banking services.
Given my…
Steve Daum
The ability to make predictions has always been rewarded. Statistician Donald J. Wheeler says that “prediction is the essence of business.” With growing bodies of data and good analytical models, our predictions are getting better.
The statistical models and algorithms behind prediction can be…