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Antarctic sea ice levels dive in 'five-sigma event', as experts flag worsening consequences for planet (www.abc.net.au)

submitted 1 year ago by [email protected] to c/[email protected]

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[–] [email protected] 2 points 1 year ago (1 children)

I couldn't do better than Wikipedia.

[–] [email protected] 1 points 1 year ago (1 children)

Thanks. So I guess it doesn’t really measure anything in that field. Looks more like a strategy guideline and a set of techniques.

[–] [email protected] 1 points 1 year ago* (last edited 1 year ago)

If you read the section on etymology of the business term, it was referring to the metric of quality control. Basically it means your QC is so good that a bad unit gets shipped only a tiny fraction of the time.

Processes that operate with "six sigma quality" over the short term are assumed to produce long-term defect levels below 3.4 defects per million opportunities (DPMO). The 3.4 dpmo is based on a "shift" of ± 1.5 sigma explained by Mikel Harry.