SAB7#082 SIGMA

SAB7#082 SIGMA

1. Is another name for standard deviation and indicates how much variance from the mean has been established as permissible in a process.

2. The level of quality a company has decided to try to achieve is represented by 3 or 6 sigma.

   • Six Sigma is a methodology for organizational process improvement and achieving high levels of correctness with extremely reduced variances.

3. 1 Sigma: 68.27% = 691,462 defects in 1 million

4. 2 Sigma: 95.45% = 308,538 defects in 1 million

5. 3 Sigma: 99.73% = 66,807 defects in 1 million

6. 4 Sigma: 99.9937% = 6,210 defects in 1 million

7. 5 Sigma: 99.999943% = 233 defects in 1 million

8. 6 Sigma: 99.9999998% = 3 o 4 defects in 1 million

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