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Understanding Process Sigma Level: Level Up Your Process QualityThe 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 ...
"The certification offers valuable process improvement tools that extends beyond operations and supply chain management, ...
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