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What is Six Sigma

What is Six Sigma - Six What The Highest Quality Producer...

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Six “What”? “The Highest Quality Producer is also the Lowest Cost Producer” Motorola SixSigma Presentation
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“Basically, it is a high-performance data-driven approach to analyzing the root causes of business problems and solving them.” J. Blakeslee July 1999 Article Quality Progress Six Sigma
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“At the strategic level, the goal of Six Sigma is to align an organization keenly to its marketplace and deliver real improvements (and dollars) to the bottom line.” “At the operational level, Six Sigma’s goal is to move business product or service attributes within the zone of customer specifications and to dramatically shrink process variation—the cause of defects that negatively affect customers.” J. Blakeslee July 1999 Article Quality Progress Six Sigma
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It’s all of the following: A Metric that demonstrates quality levels at 99.9997% performance for products and processs A Vision and Philosophical commitment to customers to offer the highest quality, lowest cost products A practical application of statistical Tools and Methods to help us measure, analyze, improve, and control our process A Benchmark of our product and process capability for comparison to ‘best in class’ What is Six Sigma
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Six Sigma as a Metric Sigma = σ = Deviation ( Square root of variance ) -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 Axis graduated in Sigma 68.27 % 95.45 % 99.73 % 99.9937 % 99.999943 % 99.9999998 % result: 317300 ppm outside (deviation) 45500 ppm 2700 ppm 63 ppm 0.57 ppm 0.002 ppm between + / - 1 σ between + / - 2 σ between + / - 3 σ between + / - 4 σ between + / - 5 σ between + / - 6 σ σ
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Manage the outputs. Sales Growth Market Share Profitability Traditional Vision
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A Non-Traditional Vision Manage the inputs; respond to the outputs. Sales Growth Market Share Profitability Customer Satisfaction Product Quality On-Time Delivery COQ Credit Terms Relationships Service Customer Training Six Sigma Philosophy
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Six Sigma the Method Indentifying different numbers of Defect Opportunities ... Manufacturing Processes Customers or Suppliers Administrative Areas 6 σ = Combined with a structured approach to continuous improvement 1 - Identify the product or service you provide 2 - Identify your customers & their requirements 3 - Determine your needs & suppliers 4 - Define the process for doing work 5 - Eliminate defect sources / optimize the process Measure/Analyze/Improve/Control (MAIC) 6 - Continuously improve the Sigma level (“ Six steps toward excellence” ) A Bit of Statistics ... -7.0 -6.0 -5.0 -4.0 -3.0 -2.0 -1.0 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 upper spec limit Lower spec limit +1.5 Sigma -1.5 Sigma 3.4 ppm or Zero +
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MAIC Strategy Phase Measure (What) Analyze (Where, When, Why) Improve (How) Control (Sustain, Leverage) Step What is the frequency of Defects? • Define the defect • Define performance standards • Validate measurement system • Establish capability metric Where, when and why do Defects occur?
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