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Process capability analysis of non-normal process data using the Burr XII distribution


This paper proposes a novel modification of Clements’s method using the Burr XII distribution to improve the accuracy of estimates of indices associated with one-sided specification limits for non-normal process data. This work proposes a novel Burr-based method, and compares it with Clements’s method by simulation. Finally, an example application to semiconductor manufacturing is presented.

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Correspondence to Fei-Long Chen.

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Liu, PH., Chen, FL. Process capability analysis of non-normal process data using the Burr XII distribution. Int J Adv Manuf Technol 27, 975–984 (2006).

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  • Burr-based method
  • Burr XII distribution
  • Clements’s method
  • Non-normal distributions
  • Process capability index