Email This Page

Sigma Performance Levels -- One To Six Sigma
Sigma Level	Defects Per Million Opportunities (DPMO)
1	690,000
2	308,537
3	66,807
4	6,210
5	233
6	3.4

What Would This Look Like In The Real World?
It's one thing to see the numbers and it's a whole other thing to see how it would apply to your daily life.

Real-World Performance Levels
Situation/Example	In 1 Sigma World	In 3 Sigma World	In 6 Sigma World
Pieces of your mail lost per year [1,600 per year]	1,106	107	<1
Number of empty coffee pots at work (who didn't fill the coffee pot again?) [680 per year]	470	45	<1
Number of telephone disconnections [7,000 talk minutes]	4,839	467	0.02
Erroneous business orders [250,000 per year]	172,924	16,694	0.9