Rare card

68–95–99.7 rule

Value

50 W

Attack

290

Defence

232

Players

0

In statistics, the 68–95–99.7 rule, also known as the empirical rule or 68–95–99.7 rule for a normal distribution and sometimes abbreviated 3sr or 3 σ, is a shorthand used to remember the percentage of values that lie within an interval estimate in a normal distribution: approximately 68%, 95%, and…

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