“Sigma” means standard deviation and therefore Six Sigma means six standard deviations.

Sigma Level Defects per Million Defects as Percent

One Sigma 690,000.0 69.0000%

Two Sigma 308,000.0 30.8000%

Three Sigma 66,800.0 6.6800%

Four Sigma 6,210.0 0.6210%

Five Sigma 230.0 0.0230%

Six Sigma 3.4 0.0003%

The objective of Six Sigma is only 3.4 defects (or errors) out of every million defect opportunities. This translates into 99.99966% perfection.

## Saturday

Subscribe to:
Post Comments (Atom)

## 0 comments on "Six Sigma levels"

Post a Comment