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Understanding Process Sigma Level: Level Up Your Process Quality
The overall defect rate, therefore, is 3.4 PPM. A similar argument applies to the extreme case of a 1.5-sigma shift to the left. A Six Sigma process is 4.5 sigma in the long term, and the 3.4 PPM ...
Lean Six Sigma: A data-driven path to business excellence
"The certification offers valuable process improvement tools that extends beyond operations and supply chain management, ...