Variance is a measure of dispersion, meaning it is a measure of how far a set of numbers are spread out from their average value. It is the second central moment of a distribution, and the …

条件方差 (Conditional Variance) 用来描述一个随机变量在给定另一随机变量的条件下的方差。 条件方差可以衡量在知道一部分信息的情况下，剩余不确定性的大小。

Variance is a statistical measurement that is used to determine the spread of numbers in a data set with respect to the average value or the mean. The standard deviation squared will give us …

方差（Variance） 是 统计学 中的一个重要概念，用来度量一组数据的离散程度或分散程度。 具体来说，方差反映了数据点与其均值之间的偏离程度。

be at variance (with someone/something) to be in disagreement with someone or something, or to be different from him, her, or it 与…有分歧;与…存在差异

Variance is a statistic that is used to measure deviation in a probability distribution. Deviation is the tendency of outcomes to differ from the expected value.

Variance is the average of the squared differences of a random variable from its mean. It is a statistical measurement of variability that indicates how far a set of numbers varies from the …

變異數 （英語： variance）又稱 变异数[1] 、 變方[2]，在 概率论 及 统计学 中，描述的是一个 随机变量 的离散程度，即一组数字与其平均值之间的距离的度量，是随机变量与其 总体 均值或 …

Variance measures the spread between numbers in a data set. It helps us determine how far each number in the set is from the mean or average, and from every other number in the set.

Variance is a measure of variability in statistics that assesses the average squared difference between data values and the mean.