ISE 426-526 - Lecture 16 - DOE & Six Sigma & Final Exam Review

ISE 426-526 - Lecture 16 - DOE & Six Sigma & Final Exam Review

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1 ISE 426-526 Lecture 16 – 2007 DOE and Six Sigma Final Exam Review Six Sigma and DOE
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2 What is Six Sigma? A data driven philosophy and process improvement methodology resulting in dramatic shifts in way a company behaves, treats its customers, and produces products/services. The goal of Six Sigma is to reduce process variation LAI Lean Academy - Quality Module V4.5 © 2006 Massachusetts Institute of Technology Two Views of Quality
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3 The 3 σ vs. the 6 σ Process Source: Goetsch and Davis – Managing Quality,5th Edition,pg. 29 Value of a 6 σ Process Source: Goetsch and Davis – Managing Quality,5th Edition,, pg. 32
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4 Implications of a Six Sigma Process Cp DPMO Cpk DPMO 2.00 0.00197 1.50 3.40 1.67 0.57330 1.17 233 1.33 63 0.83 6,210 1.00 2,700 0.50 66,811 0.67 45,500 0.17 308,770 0.33 317,311 -0.17 697,672 Process Mean On-Target Process Mean Shifted 1.5 σ Six Sigma is defined as 3.4 defects per million opportunities or a first pass yield of 99.9997% With a Six Sigma process even a significant shift in the process mean results in very few defects LAI Lean Academy - Quality Module V4.5 © 2006 Massachusetts Institute of Technology Six Sigma – Practical Meaning 20,000 lost articles of mail per hour Unsafe drinking water for almost 15 minutes per day 5,000 incorrect surgical operations per week
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ISE 426-526 - Lecture 16 - DOE & Six Sigma & Final Exam Review

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