Process Capability Index

Mechanical
1
C_pk σ Process Yield DPMO Process Yield (1.5σ Shift) DPMO (1.5σ shift)
0.33 1 68.27% 314311 30.23% 697700
0.67 2 95.45% 45500 69.13% 308700
1.00 3 99.73% 2700 93.32% 66810
1.33 4 99.9937% 63 99.3790% 6210
1.67 5 99.999943% 0.57 99.97670% 232
2.00 6 99.9999998% 0.002 99.999660% 3.4

Source: Table 11.1 and Table 11.2 [1]

See Also

  1. Yang, Kai. 2005. “Statistical Basics and Six Sigma Metrics.” Chap. 11 in Design for Six Sigma for Service. 1st ed. New York: McGraw-Hill. https://www.accessengineeringlibrary.com/content/book/9780071445559/chapter/chapter11 ↩︎