| 单词 | random variable |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔cumulative〕Of or relating to the sum of the frequencies of experimentally determined values of a random variable that are less than or equal to a specified value.累积的：在一个随机变量小于或等于某个固定值的试验中求出频率总数的美国传统〔degree of freedom〕Statistics Any of the unrestricted, independent random variables that constitute a statistic.【统计学】 自由度：构成一项统计资料的任何一个无限制的，独立的任意变量美国传统〔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 integral of the probability density function and a continuous random variable over its range of values.期望值：概率函数和超过其值域的随机变量的整数解美国传统〔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〔moment〕Statistics The expected value of a positive integral power of a random variable. The first moment is the mean of the distribution.【统计学】 矩，动差：任意变量的正整数功效的期望值。第一个矩是分配的平均数美国传统〔probability distribution〕A function of a discrete random variable yielding the probability that the variable will have a given value.概率分布：对每一个随机变量可能出现的值赋以这个值出现的概率的函数美国传统〔regression〕Statistics The relationship between the mean value of a random variable and the corresponding values of one or more independent variables.【统计学】 回归：随机变量的平均值和相应的一个或多个独立变量的值之间的关系美国传统〔variate〕A random variable with a numerical value that is defined on a given sample space.随机变量：在给定的样本空间内定义的，具有一个数值的随机变量美国传统 |
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