standard deviation

1. 1.

   the square root of the variance

   Broadervariance

   statistics

Questions about standard deviation

What does standard deviation mean?

standard deviation means "the square root of the variance".

Is standard deviation a common word?

standard deviation is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.