随机变量的加权平均值是期望值。
The weighted mean of the random variable is the expected value.
是x的连续型随机变量的概率分布。
数学期望是随机变量的重要数字特征之一。
Mathematical expectation is one of the important digital features of random variable.
同时，对随机变量的优化应用亦做了扼要说明。
Meanwhile the optimization and application of radom variable is illustrated in brief.
随机变量的方差衡量随机变量值与期望值偏离的程度。
The variance of a random variable measures how far from the expected value its values typically are.
随机变量的分布函数及其反函数在概率论中占有重要地位。
Random variable distribution functions and their inverse functions take an important role in probability theory.
不要求了解所涉及的随机变量的分布函数是该方法的特点。
The advantage of the method is that there is no requirement on the distribution of the random variables involved.
本文研究的是相依随机变量的移动平均过程的完全收敛性。
In this paper, we make a study on the complete convergence of moving average processes of dependent random variables.
因而，关于随机变量的独立性的研究构成了概率的重要课题。
So it is the important subject in probability to study the independence of stochastic variable.
研究用混合泊松随机变量的观察值来估计其随机强度的问题。
This paper studies estimation of stochastic intensity from observed values of mixed Poisson random variables.
典型负荷模式采用随机变量的数字特征：均值和方差量化表示；
The paper proposed that the typical load pattern was quantitatively expressed as "numerical characteristics" , namely mean and standard deviation.
本文论述了离散型随机变量的次序统计量的分布律及其有关推论。
In this paper, we study the distribution law of order statistic of discrete type random variable.
在塔器的可靠性强度设计中，需要进行各种随机变量的统计分析。
In the design of mechanical strength reliability of tower vessel, all kinds of random variables need to be analyzed statistically.
奇异函数是一极为重要的奇异型随机变量的分布函数，被广泛研究。
Singular function is an important distribution function of the singular random variable. It is studied widely.
讨论了特征函数的一些性质，并对随机变量的研究作了一定的探讨。
Some qualities of characteristic functions are discussed, and study on random variables is studied.
算例研究表明，各种随机变量的变异对斜拉桥结构响应影响规律不同。
The results show that the variation of the stochastic variables has a different influence to the structural responses of cable-stayed Bridges.
讨论了工件准备时间、加工时间和交货期都为随机变量的单机调度问题。
This paper is concerned with single machine stochastic scheduling problems with random ready times, processing times and due dates to minimize the number of tardy jobs.
它的主要理论基础是概率论中的大数定理，其主要手段是随机变量的抽样。
Its main theoretical base is the law of large Numbers in the theory of probability, whose main means is the sampling of random variable.
结合具体工程实例分析了各随机变量的变异性对复合地基沉降可靠度的影响。
The influence to settlement reliability of composite foundation caused by changeability of every stochastic variable is analyzed in the end.
本文证明了由两随机变量的独立性可推出它们的不相关性，但逆命题不成立。
In this paper, it is proved that two random variables' independence can infer their no-correlation and its untenable inverse proposition.
论述了需求量为连续随机变量的随机存储模型计算机模拟及其结果统计分析。
The inventory control system with continuous and stochastic demands is simulated with computer and analyzed with statistic method.
利用随机熵和模糊熵的概念，建立了模糊变量向等效的随机变量的转换关系。
Using the entropy concept, a relationship between a random fuzzy parameter and an equivalent random parameter are presented.
介绍了用古典概率和随机变量的数字特征来解决数学分析中的一些恒等式问题。
This paper introduces the problems of some identical equation solved by the numerical characters of the classic probability and stochastic variable.
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。
This paper gives a new concept of variance of fuzzy random variables and discusses it's property and calculation.
先随机产生大量贝塔分布随机变量的乘积，用数值拟合来分析并验证拟合结果。
Firstly producing many products of Beta random-variables, then analyzing them with numerical value closing in upon and validating the result.
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。
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.
通过对16根CFRP加固混凝土实验梁受弯实验，得到了随机变量的统计参量。
Through the experiment of 16 CFRP strengthened RC beams, the stochastic parameters of random variables were obtained.
在进行岩土工程可靠度分析时，首要问题是确定土性参数各随机变量的概率特性。
In the analyses on the reliability in geotechnical engineering, the principle problem is to decide the probabilistic characteristics of soil indexes.
研究了水工结构尺寸随机变量的统计方法以及尺寸不定性对水工结构可靠度的影响。
This paper studies the statistical method of hydraulic structural size random variables and the influence of size uncertainty on reliability of hydraulic structure.
研究了水工结构尺寸随机变量的统计方法以及尺寸不定性对水工结构可靠度的影响。
This paper studies the statistical method of hydraulic structural size random variables and the influence of size uncertainty on reliability of hydraulic structure.
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