比赛结果的胜负双方差距极小。
另一个基本的概念是协方差。
参数的变动越多,方差就越大
负值的协方差就表示，二者反向变动。
A negative covariance means that they tend to move opposite each other.
协方差衡量的是两个变量一起变动的情况。
Covariance is a measure of how much two variables move together.
标准差是方差的平方根。
图1：平均值为3且方差为1的正态分布。
反之，风险是向项目方差中加入的某个条件。
On the contrary, a risk is some condition that adds to project variance.
使用方差是很愚蠢的。
计量资料差异比较采用方差分析。
Difference of measurement data was compared with analysis of variance.
比较了它们的平均寿命和寿命方差。
The average lifetime and lifetime variance of these systems are compared.
这一性质比最小方差性更为直观。
The property was more object than minimum variance property.
方差的正的平方根叫做标准差。
The positive square root of the variance is called the standard deviation.
设计：随机对照的实验，方差分析。
DESIGN: Randomized controlled study and analysis of variance.
设计：单因素方差分析实验。
V0是初始方差。
再说一次这是方差的事情。
很多个负值的结果相加，就会使协方差是一个负值。
If you get a lot of negative products, that makes the covariance negative.
也就是说，在阶段I的末尾，去掉了80%的方差。
That is, at the end of Stage I, 80% of the variance has been removed.
计量资料差异比较采用单因素方差分析。
Measurement data were compared with single factor analysis of variance.
对系统进行了协方差分析。
算法同时利用目标方差特性以减少虚警率。
The standard variance characteristic of target data is used to reduce false alarm rate.
萨摩亚与西方在文化上很多地方差异非常大。
Samoan culture is very different from most Western cultures.
组间分析采用方差分析。
Analysis of variance was applied in the intergroup analysis.
增加样本方差的一种方法是增加样本容量。
One way to gain more sample variation is to increase the sample size.
组间计量资料差异比较采用单因素方差分析。
The measurement data were compared with single factor analysis of variance.
扰动项具有异方差性的模型称为异方差模型。
The model which has such kind of property is referred to as heteroscedastic regression model.
介绍具有随机设计的一类半参数方差函数模型。
We propose a general semiparametric variance function model in a random design setting.
众所周知，方差分析法是一种常用的统计方法。
As is known to all, variance analysis is a common used statistical method.
众所周知，方差分析法是一种常用的统计方法。
As is known to all, variance analysis is a common used statistical method.
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