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68–95–99.7 rule - Wikipedia, the free encyclopedia
瀏覽:1267
日期:2026-04-20
In statistics, the 68–95–99.7 rule, also known as the three-sigma rule or empirical rule, ... a 6σ event is expected to happen less than once in a million years. This gives a simple normality test: if one ......看更多










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