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In the past couple of articles, we have been having fun together testing whether a measurement device is usable for the crazy purpose of determining if we are actually making product in or out of specification. Last month, we performed a measurement systems analysis (MSA) “potential study” using a snazzy MSA spreadsheet (if I do say so myself)*. We found that the Hard-A-Tron was not only pretty highly variable (compared to our spec), but that the material we were measuring actually might have been changing over time. But a potential study was not enough for you, was it? You asked, nay demanded, that we perform a short-term MSA, and I, your humble servant, gave you the data to do so. After the jump, we will perform the analysis, so unless you are the type of person that flips to the back of the book to see if you want to read it, finish up your analysis, and then click to read more.
Six Sigma Heretic
Heretic Articles
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ROI President Steve Ouellette writes a popular monthly article for Quality Digest's InsideSixSigma online newsletter. These articles humorously (and usefully) discuss the good, the bad, and the ugly of how Six Sigma is implemented. You can access those articles here. If you want to be notified via an RSS feed as new articles are published, scroll down to the bottom of the page and click on the |
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I have recently completed the "Six Sigma Course." My background is in Engineering, which includes a graduate degree. I have spent the last ten years in the Quality and Reliability field, and have never fully grasped the concepts and principles of statistics until this course. |
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Heretic Articles
Random Heresy
Have you ever met people who “do” statistical process control (SPC) only to get some screwy-looking control chart, and then text: OMG I H8 SPC! (If you don’t understand that, ask your nine-year-old child or grandchild.) Last month we saw how it is not a failure of SPC, but rather an EBKAC (error between keyboard and chair). As I wrote in my last article, “Why Doesn't SPC Work?” perhaps they are not doing the measurement system analysis first, or perhaps autocorrelation in a continuous process. But you batch process folks are not off the hook, which is what this month’s article is about. |
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In the News
Six Sigma's lead instructor Steven Ouellette wrote an article with Dr. Jeffrey Luftig on "The Decline of Ethical Behavior in Business."
Six Sigma Online's lead instructor Steven Ouellette was profiled in the June 2008 issue of Quality Digest magazine. If you want to learn more about Steve's peculiar view of the world, as well as what he studied for a year in Europe, read the profile online.
