population variance
In statistics, the variance of a whole population, as opposed to a sample. Used in mathematical and scientific contexts.
When the population variance is known, a z-test is used for hypothesis testing.
It is difficult to estimate the population variance from this data.
Unbiased variance, an estimator of population variance using n-1 denominator. 母分散 is the actual parameter being estimated.
Compound of 母 (mother, here meaning 'population' or 'parent') and 分散 (variance). The term is a direct translation of the English statistical term 'population variance'.