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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!