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.
随机变量是一个根据概率分布取值的函数。
A random variable is a function that takes values based on a probability distribution.
在数学术语中，不完全确定的值称为随机变量。
In mathematical terms, values that are not known with complete certainty are called random variables.
是x的连续型随机变量的概率分布。
研究任意随机变量序列的强收敛性。
The strong convergence of the arbitrary stochastic sequences is studied.
对于这个随机变量X，可能的取值个数是无限的。
I have it down that there might be an infinite number of possible values for the random variable x.
估计量是一个随机变量。
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.
为了理解这一点，让我们定义以下随机变量：。
To understand this, let us define the following random variable:.
空间变异理论是研究随机变量空间变异性的理论。
Spatial variability theory is the theory of studying space variability of random variable.
我们经常在金融学中假设随机变量，比如回报，是正态分布的。
We often assume in finance that random variables, such as returns, are normally distributed.
时间序列数据是以时间为指标的一个随机变量序列。
A time series data set is a sequence of random variables indexed by time.
金融学中我们常假设随机变量,例如收益率,是服从正态分布的
We often assume in finance that random variables, such as returns,are normally distributed.
当我们看到这些数字，我们指的是观察一个随机变量。
When we observe one of these Numbers, we refer to the observation as a random variable.
然而，当利率是随机变量时，目前的研究成果并不多见。
However, when the interest rate being stochastic, these are not more.
因而，是随机变量X的范围和是随机变量Y的范围等等。
Thus is the range of random variable X and is the range of random variable Y and so forth.
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.
将上证综合指数当作一个随机变量进行预测，并作了实证分析。
Shanghai stock composite index is treated as a random variable to carry on the forecast and makes the real diagnosis analysis.
在传统的系统可靠性的研究中，系统和各部件的寿命都看作随机变量。
In classical reliability theory, the lifetimes of systems and components have been assumed to be random variables.
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.
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.
取代单个值，随机变量拥有描述估计值可能性的函数，该函数称为变量的概率分布。
Instead of this single value, a random variable has a function that describes the likelihood of values for the estimate and is called the variable's probability distribution.
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.
随机变量，如上例中的时间，与一些特性相关，这些特性不同于那些与单个值相关的特性。
A random variable, such as time in the example above, is associated with properties that are different from those associated with a single value.
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.
所以任务持续时间不是一个单一的实数，而是描述一定时间范围内完成的可能性的随机变量。
So the task duration is not a single real number, rather it is a random variable that describes the likelihood of completion within a certain range of time.
蒙特卡罗方法是一类通过随机变量统计试验，随机模拟以求得问题近似解的方法。
Monte Carlo simulation is a method of random simulation, random sampling or statistical testing.
以随机有限元理论为基础，将框剪结构的刚度、质量、阻尼等结构参数为随机变量。
Based on the theory of stochastic finite element, the structural parameters of frame shear structure including stiffness and mass and damping are simulated to be stochastic variables.
按照给定的分布，这一随机变量能由(0,1)均匀分布的随机变量加以变换得到。
This random variable can be derived from a (0, 1) uniformly distributed random variable according to a given distribution.
按照给定的分布，这一随机变量能由(0,1)均匀分布的随机变量加以变换得到。
This random variable can be derived from a (0, 1) uniformly distributed random variable according to a given distribution.
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