| 释义 |
DEFINITIVE EXAMPLES 权威例句〔expectation〕The expected value of a random variable.期望值:随意可变量的期望值美国传统〔expectation〕The mean of a random variable.随意可变量美国传统〔expected value〕The sum of all possible values for a random variable, each value multiplied by its probability of occurrence.数学期望值:随意可变量各种可能的价值的总额,每一种价值都承认它出现的可能性美国传统 |