ext_206544 ([identity profile] kalinaka.livejournal.com) wrote in [community profile] ru_translate2007-05-29 02:03 am

eng-ru, техника

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.
ext_556677: (Default)

[identity profile] weird-penguin.livejournal.com 2007-05-28 10:42 pm (UTC)(link)
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.
ext_556677: (Default)

Коэффициент вариации.

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

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