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Six Sigma

Six Sigma is a process improvement strategy that improves Output quality by reducing Defects.

Six Sigma is named after a statistical concept where a process only produces 3.4 defects per million opportunities (DPMO). Six Sigma can therefore be also thought of as a goal, where processes not only encounter less defects, but do so consistently (low variability).


For a better understanding of Six Sigma and an overview of Lean Six Sigma, check out our free Lean Six Sigma Yellow Belt Training and Green Belt Training.

For a more in-depth primer on Six Sigma, check out our What is Six Sigma? page!

GLSS is the leading provider of Lean Six Sigma Training & Certification. Our integrated Project-Based Learning approach helps everyone complete Lean Six Sigma projects 3x faster than outdated approaches. Partner with us to create a Culture of Continuous Improvement.

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