68-95-99.7 rule

English

Proper noun

68-95-99.7 rule

1. (statistics mnemonic) The rule stating that a normal distribution will have 68% of its observations within one standard deviation of the mean, 95% within two, and 99.7% within three.

Translations

statistics: empirical rule of 3σ

• Russian: пра́вило трёх си́гм (právilo trjox sígm)

Further reading

• 68-95-99.7 rule on Wikipedia.Wikipedia