Process performance index: Difference between revisions

Revision as of 15:43, 27 June 2007

Revision as of 20:33, 27 June 2007

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Practitioners may also encounter <MATH>\hat{P}_{p} = \frac{USL - LSL} {6 \times \hat{\sigma}}</MATH>, a metric that failsdoes tonot account for process performance that is not exactly centered between the specification limits, and therefore is limitedinterpreted inas itswhat the process would be capable of achieving if it can be centered and utilitystabilized.

==Interpretation==