What’s Up, Post-Hoc?
Tue, 02/19/2008 - 22:00
Last month, I described a simple problem to determine which gear material resulted in longer wear. We reviewed the extremely powerful technique called Analysis of Variance (ANOVA) and found a statistically significant and important effect on the… ANOVA by any other nameElegance rules
Tue, 01/15/2008 - 22:00
By the time you are reading this, you will have made your New Year’s resolutions, and I will have already broken mine. But I have an idea for a resolution that you might be interested in keeping, and one that could make your New Year happy and… Was It Colder in Grandpa’s Day?Digging out from a data blizzard
Tue, 12/18/2007 - 22:00
As I’m writing this, our first big snowfall of the year is piling up outside and it is –10°C (15°F). This brings to mind the many times my grandfather told me of how he walked to school in winter uphill (both ways) with no shoes. So I wondered, will… Greek Alphabet SoupFor the soul
Tue, 11/20/2007 - 22:00
Harvest time—vegetables fresh from the local farmer’s market going right into a homemade soup, eaten with fresh bread. Yum! This month, I’d like to talk about a recipe for a Greek alphabet soup, which you had better know about if you plan on doing… Don’t Judge a Gauge by Its StickerMeasurement system analysis
Tue, 10/16/2007 - 22:00
I seem to be thinking about the measurement phase a lot recently. I suppose it’s because I’ve seen some teams working hard on problems that turned out to be nothing more than problems with measurement. Let me give you an example.Once upon a time, I… How Do You Measure Up?Measurement levels, part 1
Tue, 09/18/2007 - 22:00
There is something that will get you into trouble if you don’t know about it, and which in my experience very few Black Belts or even Master Black Belts know about. It’s only in the mind of the person doing the research, and no software program… How Do You Measure Up?Measurement levels, part 1
Tue, 09/18/2007 - 22:00
There is something that will get you into trouble if you don’t know about it, and which in my experience very few Black Belts or even Master Black Belts know about. It’s only in the mind of the person doing the research, and no software program… Are You Capable?Measurements, part 3
Tue, 08/14/2007 - 22:00
I spent my June and July articles beating up on the “sigma” index commonly associated with Six Sigma (and continue to do so over in my discussion board.) Let me sum up by saying that, while not wrong, “sigma” isn’t an efficient metric for… The Bad and the UglyMeasurements, part 2
Tue, 07/17/2007 - 22:00
Last month I talked about the “sigma” index and how it can be used. So what could be bad about the “sigma” index?Never forget that metrics drive behavior and that people are very, very good at finding a way to succeed when given a goal. It just may… Shifty SigmaMeasurements, part 1
Tue, 06/19/2007 - 22:00
Now that we have talked about defining Six Sigma and 10 stupid Six Sigma tricks, I’ll move on to the measure phase and discuss some things that work and don’t work in measuring the effect of Six Sigma. The new metric that Six Sigma…
