To calculate the maximum number of defects you can have out of a million opportunities and still have a six-sigma quality level process, follow these steps:
1. Select DOE > Design Diagnostics > Sample Size and Power.
2. Click the Sigma Quality Level button.
3. Leave Number of Defects blank.
4. Enter 1000000 as the Number of Opportunities.
5. Enter 6 as Sigma Quality Level.
6. Click Continue.
Figure 17.16 Six-Sigma Quality Level for 1,000,000 OpportunitiesĀ
The computation shows that the Number of Defects cannot be more than 3 in 1,000,000 opportunities to achieve a six-sigma quality level process.