Anonymous ID: 9837cc Dec. 3, 2018, 9:44 a.m. No.4130098   🗄️.is 🔗kun

>>4130062

>68–95–99.7 rule

In statistics, the so-called 68–95–99.7 rule is a shorthand used to remember the percentage of values that lie within a band around the mean in a normal distribution with a width of one, two and three standard deviations, respectively; more accurately, 68.27%, 95.45% and 99.73% of the values lie within one, two and three standard deviations of the mean, respectively.

https://en.wikipedia.org/wiki/68–95–99.7_rule