不ふ偏へん分ぶん散さん

noun

unbiased estimate of population variance; sample variance (with Bessel's correction)

In statistics, the variance calculated by dividing the sum of squared deviations by n-1, used as an unbiased estimator of the population variance. Often contrasted with 標本分散 (sample variance dividing by n).

• 不ふ偏へん分ぶん散さんは、標ひょう本ほんから母ぼ集しゅう団だんの分ぶん散さんを推すい定ていするときに使つかわれる。

  The unbiased variance is used when estimating the population variance from a sample.