Tuesday, October 9, 2007

4.Probability and Defects

One of the most critical conceptual relationships to understand in learning the Six Sigma methodology is the idea of probability of defects and the yield of a process. The following production results were noted:

•A total of 1,000 parts were produced.
•22 parts were greater than the Upper Spec Limit.
•31 parts were less than the Lower Spec Limit.
•Therefore 22+31=53 parts were rejected._

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