3 Sigma Rule

設定した過去n日間の値動きが、どのくらいの確率で1~3σに収まっているかを表示するインジケーターです。

(From Wikipedia, the free encyclopedia)

In statistics, the 68–95–99.7 rule, also known as the empirical 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 two, four and six 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.