查询词典 variance ratio

Thus s2 is also the unconditional variance, called the error variance

因此 s2 也是无条件方差，被称作误差方差

Secondly this dissertation made the statistical analysis of brittle ice load, and results showed that there was a greater variance of ice load during slow ice speed movement and a smaller variance of ice load during fast ice speed movement.

其次对冰脆性破坏时的荷载进行了统计，结果显示当冰速较慢时荷载的变化较大，而当冰速较快时荷载的变化较小。

Under a certain conditions on variance matrix invertibility, we show that the optimally weighted LS estimate outperforms the linear minimum variance estimate provided that they have the same priori information.

因此，我们讨论了在相同已知信息的情况下，即最优加权最小二乘估计也利用有关被估参数的先验信息时，二者的估计性能。

On the vertical section,the changes of variance and CV in different soil layers were different along with the scale,Moreover,the changing pattern of isogram of soil water was different under the same scale and was alsodifferent from the changing pattern of variance and CV from the traditional statistics.

在垂直剖面上，不同水平层次土壤含水量的方差和变异系数的变化规律随尺度而不同。

The distribution of variance, exhibited severe skewness which can be adjusted by natural logarithm transformation. Table 1.Comparison TA with GE of HRV. Table 1. presented the RR interval、 Ln、 LF% and variance of two groups. TA had significant higher than GE.

在安静心跳率TA比NT及HT患者之心跳率低，且达显著水准；TA与NT及HT间R-R波间隔时间皆有显著差异；在Ln的结果，TA与HT有显著差异 NT与HT也有显著差异；LF%的结果，TA显著高於HT，NT与另两组皆无显著差异；心率变异度部份HT皆显著低於另外两组。

With regard to the estimation of the variance components, many statisticians proposed a number of approaches, such as the Analysis of Variance Estimator, Maximum Likelihood Estimator, Restricted MLE, and the Minimum Norm Quadratic Unbiased Estimator, etc.

关于方差分量的估计统计学家们提出了许多方法，如方差分析估计，极大似然估计，限制极大似然估计，最小范数二次无偏估计等。

The algorithm consists of 3 criterions: Criterion 1 is the mean square value of the difference image, and indicates occurrence of availability change of parking space; Criterion 2 is the variance of difference image; Criterion 3 calculates ratios of foreground to background at first, and then gets the variance of ratios.

监控算法基于以下三种判据：判据一是差影的均方值，可反映车位占用状态变化事件的发生；判据二是差影的方差，判据三是前景与背景比值的方差，通过判据二、判据三可以排除干扰、确认车位状态变化。

Considering the randomness of the structural physical parameters and utilizing the random variable's functional moment method and the algebra synthesis method, the mean value and the variance of the mean square value of the structural displacement response under stationary random excitation are computed firstly from the expressions of structural stationary response in frequency domain. And then the expressions of the mean value and the variance of stochastic rigid frames dynamic reliability are educed from the Poisson formula of calculating dynamic reliability.

考虑结构的物理参数具有随机性，从结构随机响应的频域表达式出发，利用求解随机变量数字特征的代数综合法和矩法，导出随机参数刚架结构在平稳随机激励下的位移及速度响应均方值的数字特征，再由动力可靠性的Poisson公式导出结构动力可靠度的计算公式。

So a Matlab p rogram is developed to op timize interval estimation on variance of normal distribution and p rovide arith2 metic of hypothesis testing on variance of normal distribution.

5统计工具箱没有优化正态总体方差的区间估计，且没有给出正态总体方差检验的问题，通过编写Matlab程序，优化统计工具箱对正态总体方差的区间估计，开发正态总体方差的假设检验算法。

In terms of data treatment, SPSS for Windows was used to conduct statistical analysis by methods of item analysis, factor analysis, reliability analysis, descriptive statistics, t-test, one-way multivariate analysis of variance, and one-way analysis of variance. Each research result item was discussed, and the results of this study are summarized below

在资料处理方面，以SPSS for windows进行项目分析、因素分析、信度分析、描述统计、t考验、单因子多变项变异数分析与单因子变异数分析等方法加以统计分析，逐一讨论各项研究结果，兹将本研究的结果归纳如下

"Yes, now you can give yourself airs," she said, you have got what you wanted.

"对了，您现在高兴了，"她说道，这是您所期待的。

Then the LORD said to me: Rebel Israel is inwardly more just than traitorous Judah.

上主于是对我说：＂失节的以色列比失信的犹大，更显得正义。