When learning about Six Sigma, it may help to consider these charts, which detail how sigma level relates to defects per million opportunities (DPMO), and some real-world examples.
|Sigma Performance Levels - One to Six Sigma|
|Sigma Level||Defects Per Million Opportunities (DPMO)|
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 opportunities per year]||1,106||107||Less than 1|
|Number of empty coffee pots at work (who didn't fill the coffee pot again?) [680 opportunities per year]||470||45||Less than 1|
|Number of telephone disconnections [7,000 talk minutes]||4,839||467||0.02|
|Erroneous business orders [250,000 opportunities per year]||172,924||16,694||0.9|