A randomvariable, 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。
2
The probability distribution associated with the randomvariable X describes the likelihood of obtaining certain values or ranges of values of the random variable.