sigma level calculations

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August 30, 2007 at 4:54 am #47994

N.lavanya
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Hello,
Can any explainme how to calculate sigma level provided we have sample mea, standard deviation

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August 30, 2007 at 7:57 am #160573

The New MB
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USL-LSL/6*SD(Sigma) for Cp
IF Cp=1,then Sigma level is 3
If Cp=1.33,1.67 & 2 ,then Sigma is 4,5 & 6
good luck

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