random variable

常见例句

A random variable is a function that takes values based on a probability distribution.
随机变量是一个根据概率分布取值的函数。
A random variable, such as time in the example above, is associated with properties that are different from those associated with a single value.
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。
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.
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。

If you have an experiment and the outcome of the experiment is a number, then a random variable is the number that comes from the experiment.
如果你有一个试验,这个试验的结果是一个数,那么相对应的随机变量,指的就是这个试验结果所对应的那个数
耶鲁公开课 - 金融市场课程节选
For example, the experiment could be tossing a coin, I will call the outcome heads the number one, and I'll call the outcome tails the number zero, so I've just defined a random variable.
比方说,抛硬币的试验,我将正面向上的结果对应数字1,反面向上的结果对应数字0,这样我就定义了一个随机变量
耶鲁公开课 - 金融市场课程节选
I have it down that there might be an infinite number of possible values for the random variable x.
对于这个随机变量X,可能的取值个数是无限的
耶鲁公开课 - 金融市场课程节选