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It’s Time To Ditch the 1.5-Sigma Shift
One of Six Sigma’s most hotly debated features is the infamous 1.5-sigma shift. Here’s how it works. In Six Sigma we assume that the customer’s actual experience will be worse than what we predict during capability analysis. We add a “fudge factor” that assumes that the process will shift by approximately 1.5 standard deviations. I’ve […]
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How to Conduct a One-Way ANOVA Using Excel
One method of analyzing the difference between group means is analysis of variance. The ANOVA procedure follows the classical, statistical hypothesis, inference-testing format. First, state the null and alternative hypotheses. The ANOVA procedure creates a table that tests the null hypothesis of equal means against the alternative hypothesis that at least two groups have different […]
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Reducing Medicare Patient Readmission Rates with Six Sigma in Healthcare
The Reality of Medicare Patient Readmissions A shocking study featured in the New England Journal of Medicine revealed that one in five Medicare patients are readmitted to the hospital within 30 days of being discharged, and one in three return within 90 days. These alarming numbers are primarily due to patients lacking a primary care […]
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Actual Six Sigma Project Ideas – 03
More actual Lean Six Sigma project proposal examples. Project Name Problem Statement Business Case AGC Phosphate Line Punch Sticking Cold forming rings that we phosphate for AGC are sticking when they go to cold form. The customers processing time is the main impact as the parts have to be returned to us for reprocessing which […]
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Actual Six Sigma Project Ideas – 02
More actual Lean Six Sigma project proposal examples. Project Name Problem Statement Business Case Increase basecap throughput on X56 From the basecap 16 cavity mold that runs in X56, 5 cavities in average are being scrapped due to dimensions out of specifications from the beginning of the year. Throughput of the press is reduced 31%, […]
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Actual Six Sigma Project Ideas
No doubt about it, “the project” is the most intimidating part of becoming certified as a Lean Six Sigma Belt. And, in my opinion, it’s also the most important part. It reminds me of learning math versus being able to use math to solve actual problems. I can recall studying algebra and feeling certain that […]
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A Change Agent’s Most Important Personal Attribute
Today I received a call from a person interested in becoming a certified Lean Six Sigma Black Belt. Of course, we value him as a customer and he will learn a great deal if he decides to enroll in our Six Sigma training. Among the things he’ll learn are both “hard skills” involving statistics and […]
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What Are SIPOC Maps and How Do You Use Them?
Kirby had been a service agent at the sales contact center for a long time. And he was a good one, one of the best. But his promotion to supervisor for a small group of agents was a new job to him and he wanted his team to do their job better. There were many […]
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What is Six Sigma?
For Motorola, the originator of Six Sigma, the answer to the question “Why Six Sigma?” was simple: survival. Motorola came to Six Sigma because it was being consistently beaten in the competitive marketplace by foreign firms that were able to produce higher quality products at a lower cost. When a Japanese firm took over a […]
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Mapping for Business Improvement
In my Six Sigma Leadership Process post I described the leadership process at the highest level, the L-1 level. I mentioned that the Improve phase of leadership required mapping core processes to an actionable level, a level where the Process Excellence Leadership Team–the PELT–could identify the critical to quality drivers in the process. In this […]