Category: Six Sigma

  • A Bulk Sampling Question

    Question from a Lean Six Sigma Black Belt Student The calculator sheet is very useful. But for my situation here in my plant, we produce bulk product (1200 MT of Refined Canola Oil). Suppose we need to test for “linoleic value” at the finished product, which is fluctuating between 1.75 and 2.39 values (margin of…

  • Sigma Level Versus Process Capability Estimates

    Question from a Lean Six Sigma Green Belt Student I am a little bit confused about the “process sigma level calculation” : Thank you for your feedback, Answer It’s a difference in terminology: process capability versus process sigma. Process capability analysis has been around a lot longer than Six Sigma. It does not use the…

  • Lean Six Sigma Improves Healthcare Employee Morale

    It has long been known that Lean Six Sigma provides benefits for shareholders and customers, but a recent study by the Agency for Healthcare Research and Quality (AHRQ) show that healthcare organizations that use Lean Six Sigma report higher employee satisfaction. In fact, an independent comparative study of 13 Lean projects, staff at all levels…

  • Sigma PPM Percent Converter

  • 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…

  • 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…

  • 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…

  • 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…

  • 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…

  • 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…