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Sigma is a Greek symbol used for many variables in mathematics and science. However, within statistics, the variance is sigma squared and it is always positive. Sigma is used as the standard deviation of a population, and as calculated, it is always equal or greater than 0 (a positive number). However, in discussing errors, one can consider adding or subtracting sigma, ie the error in our experiment is +/- one sigma from the population.
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What is the six sigma error rate?
what is eoor 2% at 2 sigma
What is three-sigma?
3 Sigma is 66800 defects per million pieces You can check out the number of defective pieces per million & the % accuracy for all Sigma levels in the six sigma conversion chart in the related links section
What is 4.5 sigma?
4.5 Sigma is 1350 defects per million pieces You can check out the number of defective pieces per million & the % accuracy for all Sigma levels in the six sigma conversion chart in the related links section
What is Definition of noise factor in six sigma?
Six Sigma is the basis on top.
Why use six sigma?
Six Sigma mean reduce variation and it is one of the core parts for determining the quality and the best result of a business product or service. In short, by using six sigma a business could filter its own lacunas and improvise its service or product. For that, a six sigma expert is required who can manage six sigma work in proper way.
