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。
2
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.
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。
3
This paper introduces the problems of some identical equation solved by the numerical characters of the classic probability and stochastic variable.