Six Sigma performance level chart from :--- one Sigma to Six Sigma

When we are talking about Six Sigma , it will proved helpful to us by considering the following chart given below :-

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

So we can see here in this chart that how many defects are present in one million parts according to their Sigma level.

So from this chart it is clear to us that at Six Sigma level there are only 3.4 defects per million opportunity.

It also shows that the quality at Six Sigma level is  excellent because it has very low defect rate.

        

                                   

                                      ;)