方差

在统计学中这个估计值叫组间方差。

In statistical language , this estimate is called the between-column variance .

估计误差方差约束混合H2/H∞滤波

Mixed H_2 / H_ ∞ filtering with estimation error variance constraints

应用MAP方差估计的话者自适应训练方法

Speaker Adaptive Training of Appling MAP Estimation for Covariance

GIS中地籍宗地面积的方差分量估计

Variance Component Estimation of Cadastral Parcel Area Processing in GIS

圆形极点区和状态方差上界约束下H∞指标的优化

Optimization of H_ ∞ Index under Constraints of Circular Pole and State-variance Upper Bound

性状的遗传方差、变异系数及重复力（R）的枝龄有关。

Variability coefficient and repeatability ( R ) of characters were related to branch ages .

对于方差分量的线性函数c′σ2的最小范数二次无偏估计，需要求解非线性方程组，一般没有显式解，只能获得迭代解。

Regarding the variance component linear function minimum norm quadratic unbiased estimates , it is needed to solve the nonlinear simultaneous equation .

2种氟康唑胶囊的主要药动学参数经交叉试验方差分析示无统计学差异（P均>0.05）。

Main pharmacokinetic parameters between test capsule and reference one showed no significant difference based on analysis of variance ( P > 0.05 ) .

基于方差约束，研究一类不确定线性定常随机离散系统的H∞滤波问题。

H_ ∞ filtering problem under the constraint of variance was discussed for a class of linear stochastic uncertain system .

方差&协方差分量的LS估计和有偏估计

Least Squares Estimation and Biased Estimation for Variance-Covariance Components

利用取自冲绳海槽北部的80个表层沉积物样品，对其中的放射虫壳体进行了定量分析研究。Q型因子分析得到3个主因子，方差累积贡献为90.2%；

Quantitative analysis of radiolarians was carried out for 80 surficial sediment samples collected from the northern Okinawa Trough .

单因素方差分析F检验表明，除分株数外的4个形态性状在14个居群中均表现为差异极显著。

Variance analysis of single factor indicates that there are significant differences in morphological indexes except branch number in 14 natural populations .

单因素方差分析显示3个地区间多个形态性状存在极显著差异（P0.01）；

ANOVA analysis showed that there was significant difference in most morphological traits among the three localities .

文中给出了3种不同的融合算法（高通滤波法，局部均值匹配法和局部均值与方差匹配法）用于SPOT全色影像和TM多光谱影像融合的结果，并进行了比较。

Three different fusion algorithms ( HPF , LMM , LMVM ) were applied to merge SPOT panchromatic and TM multi spectral images .

方法用正态分布小样本容量的简化检验（A法）和方差检验（B法）来判定两种测定方法所得结果的异同。

Methods The simplified test of normal distribution ( method A ) and analysis of variance ( method B ) were adopted to judge if the two testing methods have variation .

进行秩和检验，方差分析，聚类分析，多类结果logistic回归模型拟和以及有序结果logistic回归模型拟和。

Major statistical analyses were as follows : ranks test , ANOVA , cluster analysis , multinomial logistic regression and ordered - logit regression .

研究了基于LS码和Walsh码多天线CDMA系统在干扰方差已知和干扰方差未知2种情况下的容量，给出了理论分析。

The capacity of multi-antennas CDMA systems with LS codes and Walsh codes under known and unknown interference covariance is analyzed theoretically .

方差分析表明桑天牛不同危害程度与毛白杨树体的POD、PPO酶达到1%显著水平。

Variance analysis showed that it arrived 1 % significant level between the different damage level and activity of the above enzymes .

通过极差、方差分析，阐明本试验中的水溶性成分（B）和低芥酸精炼菜籽油（A）对试验结果的影响都极为显著，是主要因素；

The range and variance analysis results indicated that the water-soluble component ( B ) and low-sinapic-acid refined colza oil ( A ) had very significant effects on the test results and so were primary factors ;

方差分量模型中保G-M估计的线性变换

Linear transformations preserving G-M estimator in a variance components model

Markowitz的均值-方差模型表明，投资者的最优风险资产为市场投资组合。

Markowitz 's mean-variance model indicates that the optimum risk asset being the market portfolio .

本文提出了一种利用相邻QRS波的相关性进行最小均方差预测的心电图压缩算法。

A novel electrocardiogram compression algorithm based on minimum root-mean-square error prediction utilizing the correlation of adjacent QRS wave is proposed .

结构参数的WLS或GLS估计量方差的计算

On the calculation of WLS or GLS estimator of the structural parameters

其中提出了基于Lyapunov方程的局部预报估值误差方差阵和协方差阵计算公式。

Based on the Lyapunov equations , the formulas of computing local predicting error variances and covariances are given , which are applied to compute optimal weights .

土壤调查数据地域统计的最佳估值研究&彰武县表层土全氮量的半方差图和块状Kriging估值

Optimal estimation of soil survey data by geostatistical method & semi-variogram and block Kriging estimation of topsoil nitrogen of Zhangwu County

对于遗传力较低而QTL方差贡献较大的性状，采用标记辅助遗传评定效果较好；将QTL效应作为随机效应，可以提高种畜效应值估计的效果。

The lower the heritability and the larger the QTL variance component of the trait , the more accuracy of the marker assisted evaluation .

采用Allan方差法对IFOG的测试数据进行了分析，辨识出了各项随机误差系数。

The test data of IFOG are analyzed with Allan variance method and each error coefficient is identified .

得到的谱<（δn）2>k在谱形，强度变化和最小方差拟合的谱指数等方面均与赤道扩展F大尺度湍谱分布实验结果符合较好。

The resulting spectra are in fair agreement with the observational turbulence spectra of the large scale equatorial spread-F (λ≥ 100m ) in spectral shape , intensity and indexes by the method of least variance fitting .

统计学处理采用t检验、方差分析、q检验、χ2检验和相关分析，显著性水准为0.05。

Significance was set at P < 0.05 . Students 't-test , anal ˉ ysis of variance , q-test , X 2 - test , correlation analysis were carried out for statistic evaluation .

并将Allan方差建模结果直接应用到微陀螺的随机误差模型中。

The problem of how to apply the results extracted by Allan variance modeling scheme directly to stochastic error model is solved .