[identity profile] kalinaka.livejournal.com posting in [community profile] ru_translate
Пожалуйста, подскажите, что есть F.S.D. в следующем контексте сертификата калибровки: 

We certify that this Gauge is has been inspected and calibrated for accuracy and passed within our limits of plus or minus 2% F.S.D.

Date: 2007-05-28 10:42 pm (UTC)
ext_556677: (Default)
From: [identity profile] weird-penguin.livejournal.com
FSD-Fractional Standard Deviation

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.

Коэффициент вариации.

Date: 2007-05-28 10:51 pm (UTC)
ext_556677: (Default)
From: [identity profile] weird-penguin.livejournal.com
Коэффициентом вариации случайной величины называется отношение стандартного (среднеквадратичного) отклонения этой величины к ее математическому ожиданию.

Source - http://glossary.basegroup.ru/k/varicoef.htm

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