All Features
John Schultz
Problem solving is much more than arriving at an elegant solution. It is a twofold progression that includes problem resolution and solution implementation. Six Sigma and process improvement methods are examples of this sequenced approach to developing and deploying a remedial action that improves…
Taran March @ Quality Digest
Story update 4/13/2011: We corrected a misquote regarding who first said, “As goes GM, so goes the nation.”Every day, it seems, business as usual gets a bit more unusual. I’ve been haunting the news portals and blogs, curious to see how experts are viewing potential supply shortages following the…
Mark Graban
I was in Los Angeles on Tuesday, and I had a little extra time on my way to the Burbank airport, which meant a rare treat—lunch at the famed In-N-Out Burger. I don’t mean to be that guy who tweets what he eats, but my lunch is pictured at right.
The main picture I wanted to share is a simple…
Joseph A. DeFeo
How many times have you heard, “Lean is in and Six Sigma is out” from a colleague? The funny thing about this is that I used to hear the same thing 23 years ago. Only then it was, “Lean is in, and quality improvement teams are out.” Little has changed since then. Everyone is looking for a simple…
Mark R. Hamel
Understanding a process’ cycle time is extremely important, especially in the context of takt time. In a mixed-model environment, cycle time can be a bit less straightforward. That’s where weighted averages may make sense.
Weighted-average cycle time, also known as “average weighted cycle time…
Danita Johnson Hughes Ph.D.
Read this. It won’t be a waste of time.
Time gets lost. People kill time. Time flies. It gets wasted. Time weighs heavy on our hands. We spend time. Time passes. It drags on or it hurries by. Those behind bars are said to be doing time. Sometimes, we have no time left; we’re out of time.…
Donald J. Wheeler
Measurement error is generally considered to be a bad thing, and yet there is very little written about how measurement error affects the way we use our measurements.
This column will consider these effects for four different uses of data. But first we need to describe how to characterize…
Donald J. Wheeler
Measurement error is generally considered to be a bad thing, and yet there is very little written about how measurement error affects the way we use our measurements.
This column will consider these effects for four different uses of data. But first we need to describe how to characterize…
Davis Balestracci
There are four statements regarding control charts that are myths and in my experience, just refuse to die. The next time you're sitting in a seminar and someone tries to teach you how to transform data to make them normally distributed, or at any point during the seminar says, “Normal distribution…
Tom Pyzdek
Story update 3/29/2011: We corrected an error in the next to last sentence. "p < 0.05" was changed to "p > 0.05."
One of the exercises I assign to students in my training involves creating two histograms from normally distributed random numbers. The results often look similar to those shown…
Tom Pyzdek
Story update 3/29/2011: We corrected an error in the next to last sentence. "p < 0.05" was changed to "p > 0.05."
One of the exercises I assign to students in my training involves creating two histograms from normally distributed random numbers. The results often look similar to those shown…
Stewart Anderson
An excellent article by Donald Wheeler on the economic cost of quality, “What Is the Zone of Economic Production?” gave me pause to consider the strategic implications of reducing the costs associated with poor quality. As Wheeler pointed out in his article, there is an economic zone of production…
Stewart Anderson
An excellent article by Donald Wheeler on the economic cost of quality, “What Is the Zone of Economic Production?” gave me pause to consider the strategic implications of reducing the costs associated with poor quality. As Wheeler pointed out in his article, there is an economic zone of production…
Steve Moore
During the late 1990s, Marilyn vos Savant, holder of the Guinness Book of Records’ highest recorded IQ of 228, received an avalanche of hostile responses, many from Ph.D.s in math and statistics, when she correctly solved the controversial “Monty Hall Problem.” This concerns whether a contestant on…
Steve Moore
During the late 1990s, Marilyn vos Savant, holder of the Guinness Book of Records’ highest recorded IQ of 228, received an avalanche of hostile responses, many from Ph.D.s in math and statistics, when she correctly solved the controversial “Monty Hall Problem.” This concerns whether a contestant on…
Davis Balestracci
When teaching the I-chart, I’m barely done describing the technique (never mind teaching it) when, as if on cue, someone will ask, “When and how often should I recalculate my limits?” I’m at the point where this triggers an internal “fingernails on the blackboard” reaction. So, I smile and once…
William A. Levinson
Last May I wrote in “Airline Companies Are Driving Customers Away” that the U.S. Military Academy allows cadets only four responses to questions as to whether a specific duty or responsibility was carried out: “Yes, sir,” “No, sir,” “I don’t understand, sir,” and “No excuse, sir.” Col. Larry…
Joseph A. DeFeo
Designing for customer needs always leads to higher quality products and services, as well as innovative outcomes, because an effective design process uncovers hidden customer needs. Adapting the most effective models of continuous innovation can create the habit of innovation. Continuous…
Angelo Lyall
The business world seems fascinated with the story of how Toyota “invented” lean manufacturing. In actuality, Toyota did not aim to create this heavily marketed tool kit that we call lean manufacturing; the company simply did things “The Toyota Way” as they put it. Unleashing the innovative…
Miriam Boudreaux
There’s no more vicious cycle than problems that constantly reoccur because there’s no time to stop and solve them correctly. Although we all would like this cycle to stop, managers can’t afford to let employees waste time with too much researching, and employees don’t always have the time…
Steven Ouellette
“Come and listen to a story ‘bout a man named Ned / a poor Texas Sharpshooter barely kept his family fed. Then one day he was shootin’ at his barn / and he came up with a plan to spin a silly yarn. ‘Specifications,’ he said, ‘making of… the easy way.’ ” What do a Texas sharpshooter and…
Mark R. Hamel
A recent George F. Will column referenced the sign re-created to the right. Although I don’t necessarily believe that the signage encompasses the complete definition of discipline, it certainly provides food for thought.
A lot of folks think of discipline, especially in the context…
Kimber Evans
Kaizen. Across many industries in many countries, this term is thrown around as a “standard practice.” Continuous improvement—the ultimate goal of business everywhere, right? Find ways to get things done quicker, cheaper, more efficiently… and then implement those goals into an everyday routine.…
Jon Miller
There is an expression in Japanese, “Dust accumulates to form a mountain.” (Chiri mo tsumoreba yama to naru.) While this may not be geologically correct, it carries a deep truth that lean practitioners will recognize through experience. Taken positively, this is the essential spirit of kaizen…
I have long admired and respected Toyota. I have been to its factories, published and written books and articles about its revolutionary production system, known many of its brilliant people, and taught its methods to thousands of students. Like many of Toyota's admirers, I was shocked and saddened…
