October  2002

Vol. 4, No. 10

Quality Quiz from Professor Cleary

You're right!


U-charts are attributes charts, but that's the only part that Pyncheon Shooz had right. The statistical basis for u-charts is related to Poisson, rather than to normal distribution. To learn more about u-charts, click u-chart.pdf to view an excerpt from Practical Tools for Continuous Improvement. 

Copyright 2002 PQ Systems.

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