Populations, random samples. Sample statistics, moments of the sample mean and variance.
母体，随机样本。样本统计， 样本平均数和变异数的动差。
Demonstrate understanding of the concept and properties of a discrete random variable, including calculation and interpretation of the mean and variance.
示范不连续任意的变数观念和财产的理解，包括计算和解释那低劣的和不一致。
This paper introduces the approximate calculation of real number's or of vector parameter positive function's posterior mean, variance and forecasting density in mathematical statistics.
文章介绍了数理统计中实数或向量参数的正函数的后验平均、方差和预测密度的近似计算。
The proposed method analyses local image statistics and then matches the local histograms of two images to be fused by applying mean or mean variance matching normalization functions.
该方法分析了局部影像统计特性，应用均值或均值—方差匹配正态函数，对要融合的两幅影像局部直方图进行匹配。
First, we standardized the size, variance of gray scale and mean value of gray scale of the motor vehicle plate images.
首先，对机动车号牌图像进行大小、灰度方差、灰度均值的标准化处理。
The optimum test design is obtained to minimize variance of least square estimation of the mean life at a normal stress level.
这里的最优准则是指正常应力水平下产品对数平均寿命估计的方差的极小化。
This paper presents a single factor heteroscedastic model, deduce a method of this heteroscedastic analysis, and presents the estimation of mean and variance in this model.
本文提出了一种单因子异方差模型，导出这种异方差分析方法，并给出了模型中均值与方差的估计。
In this paper it not only gives the method of unequal probability in group sampling and unbiassedness of mean estimation and also gives the variance and its unbiassedness of estimation.
本文给出了集团抽样的不等概方法和均值的无偏估计，同时也给出了这种估计的方差及方差的无偏估计。
Mean fascial displacement amplitude was grouped by PP and analyzed using 2-way repeated measures analysis of variance and contrast analysis.
依据灌注压对筋膜移位程度进行分级，应用双因子重复性方差分析和对照分析进行数据分析。
The mean and variance of the optimal payoff is determined by both the payoff-risk coefficient of information and the risk aversion parameter, but the risk price is only by the former.
投资者的最优收益的期望值和方差由其对应信息的风险-收益系数和风险厌恶参数共同决定。而市场的风险价格完全由信息的风险-收益系数确定。
The time sequence, which is plus correlation with mean value of consistency value series and minus correlation with variance of consistency value series, is used as weight coefficient for sensor.
引入与一致性度量序列均值正相关，与方差负相关的序列作为传感器的权系数。
As an application, we obtain an expression for the mean and variance of the first reaching time t.
作为应用，得到了首达时t的均值和方差的表达式。
Markowitz's mean variance model describes the risk of asset by variance, but variance may not exist because of fat tailedness of asset returns.
马柯维兹均值—方差模型使用收益率的方差度量证券的风险，但是实际分布呈尖顶胖尾状，使得方差可能不存在。
The variance of mean flow could propagate downward gradually, for some time it reached to surface and effected atmospheric circulation and weather progress.
平均流的变化会逐渐下传并可能在一段时间之后到达地面，影响地面大气环流和天气过程。
The equations are solved by finite difference method and the mean and variance of pressure head are determined from its random expression.
通过摄动方法得到一系列关于水头展开式的偏微分方程，用有限差分法进行求解，获得了压力水头的随机描述，并计算其均值和方差。
The multiplicative noise and saturation effect in a single-mode laser are investigated and the mean and normalized variance of the steady state laser intensity are calculated.
研究了单模激光中的倍增噪声和饱和效应，导出了定态激光强度的平均值和归一化方差。
The results indicate that the initial deviations of the joint positions match normal probability density function limited in the range of double mean variance.
随机缺陷分析方法中假定结构每个节点的位置偏差符合二倍均方差范围内的正态概率密度函数是可以接受的。
In particular, we focus discussion on joint confidence sets of the parameter mean and variance when a rounded sample comes from the normal distribution with both parameters unknown.
特别地，本文集中讨论当数据是来自参数未知的正态分布四舍五入后的数据，均值和方差的联合置信集。
Using images' features such as gradient, mean, variance, degree of smoothing and texture characteristics to establish cost function may obtain the best results of target detection.
该方法利用动态规划理论中代价函数的建立过程来充分考虑图像中的灰度、均值、方差、光滑程度和纹理等多种特征，从而使目标检测的结果为最佳。
According to maximum likelihood theory, it fuses random samples coming from different matrix (same mean different variance) in an effective way, and gains a nwe estimator of matrix mean.
该方法依据极大似然原理将来自不同母体(均值相同、方差不同)的随机样本有效融合，得到新的母体均值估计量。
With covariance matching technique and innovation information of filtering, the noise variance is dynamically adjusted and the mean square error of the fusion system always keeps minimum.
该算法采用协方差匹配技术，依据滤波新息，动态调整测量噪声方差，使融合系统的均方误差始终最小。
Using mean, variance conceptions in the definition of the sliding mode reachability can better reflect the stochastic characteristics of the systems.
运用均值、方差概念来定义的滑动模可达性，更能反映系统的随机特征。
The algorithm mainly controls the size of the smoothing area and the mean variance threshold to select the maximum correlation area containing minimum noise interference.
该算法主要通过控制平滑区域大小和均方差阈值来选择受噪声干扰最小和最大相关区域。
On the occasion of invariant mean and lower variance of demand as well as lower product return rate, the amount of product return is very stable.
在需求比较稳定，有恒定的均值，较小的方差且产品回流率较小时，回流产品非常稳定。
When the noise variance is known, and it's process is stationary, the signal can be enhanced by use of the recursive least mean-square estimation.
当噪声的方差已知，且过程是平稳的，应用递推最小方差估计，能够增强信号。
In the paper, the mathematical model for the proposed method is deduced, and the mean and variance of the acquired carrier difference phase of the proposed method are analyzed and simulated.
给出了该方法提取两导航台载波差分相位的数学模型，并分析了该方法提取的差分相位的均值及误差，进行了计算机仿真。
The purpose of this paper is to summary the literatures on tests of portfolio mean-variance efficiency in the framework of classical statistics and Bayesian inference.
评述了应用经典统计学和贝叶斯推断检验资产组合均值方差有效性的文献，提出了这些方法在我国应用-的可能性。
The relationship between mean of CT number and variance of CT number to axial deformation are parabolas.
CT数的均值、方差随轴向变形变化关系曲线呈抛物线形式。
Then, the best threshold value is calculated basing on the gradient magnitude mean and the variance of the image.
再由图像的梯度幅值均值和方差计算出图像的最佳阈值。
Then, the best threshold value is calculated basing on the gradient magnitude mean and the variance of the image.
再由图像的梯度幅值均值和方差计算出图像的最佳阈值。
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