Phrase
random variables
noun
随机变量
random variables is the plural of random variable.
A variable whose possible values are numerical outcomes of a random phenomenon.
主要用于统计学和概率论
- 1.
A quantity whose value is random and to which a probability distribution is assigned, such as the possible outcome of a roll of a dice.
其值随机并被赋予概率分布的变量,例如掷骰子的可能结果。
无规变量；其值随机并被赋予概率分布的变量,例如掷骰子的可能结果。；随机变数
In use
The number of heads in ten coin flips is a discrete random variable.
A student's score on a standardized test can be treated as a random variable.
The waiting time for a bus is a continuous random variable.
X is a random variable
常用于定义某量为随机变量。
Height is a random variable.
身高是一个随机变量。
a random variable that ...
用于描述随机变量的性质。
A random variable that follows a normal distribution is called a normal random variable.
服从正态分布的随机变量称为正态随机变量。
the distribution of a random variable
常用于讨论统计特性。
Connections
Confusing words
- random number
- 随机数 · 随机变量是一个变量，其取值由随机试验决定；随机数是一个具体的数值，是随机变量的一个观测值。
- stochastic process
- 随机过程 · 随机变量是定义在样本空间上的函数，其取值随试验结果变化；随机过程是一族随机变量，用于描述随时间变化的随机现象。
Word family
- random variables
- plural
Learner notes
Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.