The fractional standard deviation of a random variable is equal to its standard deviation σ divided by its mean μ. This ratio has also been called the “coefficient of variation.” In practice, σ and μ are replaced by estimators such as sample standard deviation and a sample mean, respectively. The FSD is often expressed as a percent.
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Date: 2007-05-28 10:42 pm (UTC)The fractional standard deviation of a random variable is equal to its standard deviation σ divided by its mean μ. This ratio has also been called the “coefficient of variation.” In practice, σ and μ are replaced by estimators such as sample standard deviation and a sample mean, respectively. The FSD is often expressed as a percent.