Seven sigma | definition of Seven sigma by Medical dictionary
Six Sigma (redirected from Seven sigma)
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A philosophy that strives to achieve perfection by setting extremely high objectives, collecting data, and analysing results to a fine degree as a way to decrease defects in products and services
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References in periodicals archive
Six sigma is an arbitrary limit with just as much validity in five sigma or seven sigma
If there are seven sigma
to the boundary ([sigma] = 7), then the probability of an error is 2.7 x [10.sup.-10], which is quite small.