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## 随机变量

### 网络释义专业释义

[数] random variable

[数] Chance variable

... correspond to与、、、相一致 chance variable随机变量 circuit电路 ...

[数] stochastic variable

sum of cross products of

... stochastic variable分层抽样 sum of cross products of随机变量 deviation from mean离均差积和 ...

更多收起网络短语
• random variable - 引用次数：64

In the former two situations, the exit time is assumed to be a random variable and in the last situation the exit time is assumed to be a stochastic process.

对前两种情形考虑退出时间是个随机变量，对最后一种情形考虑退出时间是个随机过程。

参考来源 - M
• stochastic variables - 引用次数：4

In the reliability analysis and design of structures,it is unreasonable to describe all the uncertain parameters as stochastic variables when the probabilistic distribution characteristic for some of them is unavailable and only their variation bounds are known.

在结构可靠性分析和设计中,往往无法将所有不确定性参数均作为概率随机变量,存在部分不确定性分布特征不明确而仅知其扰动界限的情况。

参考来源 - 随机
• chance ariable
random variable
• random variable
• random variable
• stochastic variable

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### 新汉英大辞典

#### 随机变量

• {数} stochastic variable; random variable; chance variable

### 双语例句原声例句

• 我们经常金融学中假设随机变量比如回报是正分布的。

We often assume in finance that random variables, such as returns, are normally distributed.

• 随机变量如上中的时间一些特性相关这些特性不同那些单个相关特性

A random variable, such as time in the example above, is associated with properties that are different from those associated with a single value.

• 所以任务持续时间不是单一实数而是描述一定时间范围内完成可能性随机变量

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.

• But they're accountable and we can list all possible values when they're discrete and form a probability weighted average of the outcomes.

随机变量是离散的话,我们可以把所有的可能值列出来,然后算出加权平均值

耶鲁公开课 - 金融市场课程节选

• This refers to random variables that have fat-tailed distributions-- random variables that occasionally give you really big outcomes.

这就表示,服从长尾分布的随机变量,这些数据出现极端值的概率比较大

耶鲁公开课 - 金融市场课程节选

• That's different when you have continuous values-- you don't have P because it's always zero.

和离散型随机变量的分布不同的是,连续型随机变量的分布中,某一点的概率值始终是零

耶鲁公开课 - 金融市场课程节选

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