An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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standard deviation
  کژرفت ِ استانده  
kažraft-e estândé
Fr.: écart-type  

The most widely used measure of dispersion of a frequency distribution. It is equal to the positive square root of the → variance. Same as → standard error. Not to be confused with the
→ root mean square error.

See also: → standard; → deviation.