68–95–99.7 rule - Wikipedia, the free encyclopedia

68–95–99.7 rule - Wikipedia, the free encyclopedia

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日期:2025-06-27
In statistics, the 68–95–99.7 rule, also known as the three-sigma rule or empirical rule, states that nearly all values lie within three standard deviations of the mean in a normal distribution. About 68.27% of the ......看更多