The structure variance of soil nutrient is bigger than the random variance.
毛竹林土壤养分的结构性变异大于随机变异。
The variance of a random variable measures how far from the expected value its values typically are.
随机变量的方差衡量随机变量值与期望值偏离的程度。
The technical definition of variance is the random variable's second central moment, the weighted average of the square of the differences from the expected value.
3方差的专业定义是随机变量的二次中心矩，与期望值之差的平方的加权平均值。
No matter how ahead of us is the random variables, no matter how the variance of future, believe the trough, wave be far behind?
不论我们前面是怎样的随机变量，不论未来有多大的方差，相信波谷过了，波峰还会远吗？
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。
Random Numbers of GGD with any shape parameter and any variance can be generated easily by adjusting the numerical values of these parameters.
通过调整分布参数的数值，就能产生具有任何形状参数和任何方差的GGD随机数，简单易于实现。
This paper gives a new concept of variance of fuzzy random variables and discusses it's property and calculation.
本文给出了模糊随机变量的方差这一概念，并讨论了它的一些性质及计算方法。
On the other hand, the moment, the second moment and variance of the present value random variables about some life annuities and annuities with random interest rate are gotten.
另一方面讨论了随机利率下的一些离散年金、连续年金和连续生存年金现值随机变量的一阶和二阶原点矩及其方差。
Variance is an index that can describe distribution of random variables, and is used to describe inter-category distribution of feature term .
方差是描述随机变量分布情况的指标，本文用方差来描述特征词在类间的分布情况。
Variance component model of the random effects of covariance matrix unit for the "Linear model introduction" matrix has been studied.
方差分量模型的随机效应的协方差为单位阵时《线性模型引论》已进行研究。
However, for the composite load has the characteristics of complex composition, random time variance and spread over different area, its exact mathematics model is still not built up.
然而，系统中的综合负荷，由于具有构成复杂、随机时变、地域分散等特点，其准确的数学模型一直没有建立起来。
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。
Comparative study on random sampling and Latin hypercube sampling with and without variance reduction techniques is carried out to a number of different limit state functions.
在一系列不同的极限状态函数条件下，对随机抽样法和拉丁超立方抽样法以及是否使用方差减缩技术进行了比较研究。
According to the homogeneity test for error variance on total-effect random model with three factors in double repeated experiment, the specific formulae of test statistics and test rule are deduced.
研究两次重复试验三因子全效应随机模型误差方差的齐性检验问题，推导了检验统计量和检验规则的具体表达式。
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。
The displacement response variance of the rotor system under random excitation was investigated numerically by solving the variance equation.
通过求解方差方程，用数值方法对对随机激励作用下的转子系统的位移响应方差进行了研究。
Ascribing gross errors to random model, this paper puts forward a detection method of multiple gross errors based on variance inflation model.
本文将粗差归入随机模型，提出了基于方差膨胀模型的粗差探测方法。
METHODS: Random sample questionnaire survey was conducted among consumers in Baoding city and its surrounding counties, and the data were subjected tot-test, analysis of variance, and LSD-t test.
方法：对保定市及周边县城消费者进行随机抽样问卷调查，采用t检验、方差分析和LSD - t检验等方法对调查数据进行统计学处理。
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。
Rock mass parameters have the properties of structural and random spatial variance, which result in uncertainty of the parameters.
岩体参数具有结构性和随机性的空间变异特征，导致了岩体参数具有不确定性。
The trend component series derived in this way can near more exactly the trend component curve of the variance-stationary random signal.
该方法得大连理工大学博土学位论文到的趋向性序列能更准确地逼近非平稳随机信号的趋向性曲线。
And finally, this tool-the generating function-can be used to get some expectation and variance of random variable of continual-type non-negative distribution.
最后利用母函数这一工具求得一些连续型非负分布随机变量的数学期望及方差。
The key to application of random field theory to reliability analysis is how to combine the reduction function of variance obtained by the random theory with the reliability theory.
阐述随机场理论在进行地基可靠度分析中的作用，指出合理确定方差折减函数对地基可靠度分析具有重要意义。
In this paper, the covariance matrix of random effect in linear mixed model is extended to positive matrix. We construct the estimation of variance components based on the idea of ANOVA estimation.
将线性混合模型中随机效应的协方差阵推广为正定阵，运用方差分析估计的方法给出了方差分量的估计。
This paper introduces one item named variance rate of gray level and improves the maximum-minimum method by simplifying the noise examination process for suppressing the random impulsive noise.
引入灰度变化率的概念，并据此提出了一种去除随机脉冲噪声的改进算法，将其用于噪声点的检测，简化了最大-最小值方法中的噪声检测过程。
RANDN (n) is an N-by-N matrix with random entries, chosen from a normal distribution with mean zero, variance one and standard deviation one.
是一个n - n矩阵随机作品，选自正态分布均值为零，方差一个标准偏差为一。
The fault tolerant control is of mini-mum variance control in the case of random parameters and noises.
容错控制是随机参数和随机噪声情况下的最小方差控制。
We furthermore calculate the expectation and variance of random variable, and discuss the approximate value of no-arbitrage price when jump obeying poisson distribution.
本文进一步计算出股票价格模型的期望与方差，讨论了跳跃服从对数泊松分布时模型的无套利价格的下界。
The trend component series derived from this way can near more exactly the trend component curve of the variance-stationary random signal.
该方法得到的趋向性序列能更准确地逼近非平稳随机信号的趋向性曲线。
The trend component series derived from this way can near more exactly the trend component curve of the variance-stationary random signal.
该方法得到的趋向性序列能更准确地逼近非平稳随机信号的趋向性曲线。
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