统计学中，方差是一个重要的指标。

In statistics, variance is an important measure.

如果方差很大，说明数据分布很广。

If the variance is large, it means the data is widely spread.

第二累积量在统计学中等同于方差。

The second cumulant is equivalent to the variance in statistics.

共线性的存在会增加估计值的方差。

The presence of collinearity can inflate the variance of estimates.

我们需要计算方差来分析这些数据的稳定性。

We need to calculate the variance to analyze the stability of these data.

计算数据的方差可以帮助我们了解数据的波动情况。

Calculating the variance of the data can help us understand its fluctuations.

这组数据的方差非常小，说明数据点非常接近。

The variance of this data set is very small, indicating that the data points are very close to each other.

及投资组合的均值和方差

The mean and variance of the portfolio.

设计: 单因素方差分析实验.

DESIGN: Single factor analysis of variance.

注意,对于样本方差无定义.

Note that the sample variance is not defined for.