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Why are Control Limits at 3 Sigma?
A LinkedIn discussion started by Tham Nguyen Khoa asks: Why [are] control limits on control chart are [sic] drawn at 3σ? Control limits on a control chart are commonly drawn at 3σ from the center line because 3-sigma limits are a good balance point between two types of errors: Type I or alpha errors occur when […]
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Where Do Those Six Sigma Statistics Come From?
A student of mine had numerous questions about the various statistics used in Six Sigma. Here is my response to him in an open email: The questions you are asking regarding “Where do these statistics come from?” require entire courses in statistics to answer. In Lean Six Sigma we take information from a dozen or […]
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How One Retailer Competes Using Lean Six Sigma
Kum & Go convenience stores knows that the convenience store market is highly competitive. CSP Daily news reports that the retailer has taken to using Lean Six Sigma to help them compete. Kum & Go LC has practiced Six Sigma for several years, considering it a way to not only deliver a great retail experience […]
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Gaming the Metrics
One of the cornerstones of quality and Lean Six Sigma is data. We insist on it. Don’t tell us what you think the situation is, let the data do the talking. In god we trust, all others bring data. You get the idea. An unfortunate side effect of this emphasis is the proliferation of useless […]
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Brigade provides Lean Six Sigma training to deployed Soldiers
KANDAHAR AIRFIELD, Afghanistan — Military logistics operations are centered on providing the best possible service to their customers. Ensuring the best possible service to soldiers downrange is the priority of every logistics leader. One deployed unit is providing their soldiers an opportunity to learn new ways to improve logistic capabilities. The Task Force Resolute command provides […]
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New White Paper: Call Centers…the Deep and Still Largely Untapped Vein of Operational Profit
KomBea_CallCenters_Untapped Profit Vein In the quest for revenue and profits, most companies feel like they have left no stone unturned. But, believe it or not, a company’s call center operations, whether handled internally or outsourced, are a deep profit pool that sits unnoticed right under noses of everyone scrambling to pump up revenue and squeeze […]
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What is Six Sigma-Video
An overview of Six Sigma taken from one of the lessons in Pyzdek Institute Six Sigma Black Belt training.
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Fox Lifetime Achievement Awards Announced
Continuous Process Improvement Symposiums, sponsored by California State University at Northridge, has announced that their first posthumous Lifetime Fox Award will honor quality improvement legend Dr. W. Edwards Deming. Dr. Deming’s award will be accepted by the Deming Family. It is scheduled for presentation on November 18, 2011 during the 2011 CSI symposium which runs […]
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Free E-handbook of Statistical Methods
Click here to access the NIST/SEMATECH e-Handbook of Statistical Methods. NIST is an agency of the US Department of commerce, so this work was undertaken at public expense. It covers literally every statistical tool used in Lean Six Sigma, and many, many more. It includes hundreds of case studies and examples. Best of all, it’s […]
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Are Project Charters Important?
A student in my Lean Six Sigma Black Belt training course asked the following question: Hi Tom, In the lesson on “Choosing the Project – Carefully Assess Candidate Projects to Assure Success”, slide # 21 – it states that the project charter has low relative important criteria, second to the last important criteria. Why is […]