Six Sigma – Wikipedia
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Six Sigma - Wikipedia
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Six Sigma
File:Lean Six Sigma Structure.jpg - Wikimedia Commons
Range - Sixsigma DSI - Lean Six Sigma Glossary Term
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Six Sigma — Wikipédia
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![What is Six Sigma: Everything You Need to Know About It [Updated]](https://www.simplilearn.com/ice9/free_resources_article_thumb/five-tiered-levels-of-six-sigma-certification.jpg "What is Six Sigma: Everything You Need to Know About It [Updated]")