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sigma represents standard deviation. In a normal distribution, +/- 1 sigma from the mean, for instance, corresponds to approximately 67% of the area under the normal distribution. +/- 2 sigma corrresponds to 95% of the area and +/- 3 sigma from the mean corresponds to 99% of the area under a normal distribution. The area that is covered under +/- six sigma from the mean corresponds to nearly 100% -- that is, the part of the area NOT under that +/- 6 sigma is in the 10^-15 range or 1/1,000,000,000,000,000.
The six sigma name borrows from this to suggest that the method gives this degree of certainty: that in 999,999,999,999,999 in 1,000,000,000,000,000 cases the result will be predictable. It does nothing, however, to explain how an agricultural process management methodology applies to other fields.
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What is the percent equivalent of 6 sigma?
If Six Sigma = 0.999999, then in percentage terms that would be 99.9999%.
What is the difference between 3 sigma and six sigma?
3 Sigma is 66800 defects per million pieces 6 Sigma is 3-4 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 are the tools are used in six sigma?
Quantitative skills
What symbol would you use when automatically adding a set of numbers?
The capital sigma. The capital sigma. The capital sigma. The capital sigma.
When was Sigma Sigma Sigma created?
Well, darling, Sigma Sigma Sigma was created on April 20, 1898 at Longwood University in Farmville, Virginia. So, if you're ever on a game show and they ask you that question, you can thank me later for making you look like a smarty pants.
