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geometric standard deviation

Owned by Dennis Daggett (Deactivated)
2018-02-17
1 min read

Standard deviation of a lognormal distribution. Geometric standard deviation (GSD) is the ratio of the particle sizes corresponding to mass fractions of 84.1% and 50% (d84.1/d50), 50% and 15.9% (d50/d15.9), or the square root of 84.1% and 15.9% ( sqrt(d50/d15.9) ). GSD has no unit and must always be greater than or equal to 1.0.

Authorization Path: 2.4.5.2.20.1

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