随机变量的
网络释义
随机变量的独立性 [数] Independence of random variable
随机变量的数值特征 Numerical Feature of Random Variable
离散型随机变量的分布 Discrete probability distribution
连续型随机变量的分布 Continuous probability distribution
随机变量的众数 mode of random variables
随机变量的期望值 [统计] expected value of random variables
随机变量的矩 moment of random variable
离散型随机变量的方差 Variance of discrete random variable
双语例句原声例句
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随机变量的加权平均值是期望值。
The weighted mean of the random variable is the expected value.
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是x的连续型随机变量的概率分布。
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随机变量的方差衡量随机变量值与期望值偏离的程度。
The variance of a random variable measures how far from the expected value its values typically are.
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But they're accountable and we can list all possible values when they're discrete and form a probability weighted average of the outcomes.
但随机变量是离散的话,我们可以把所有的可能值列出来,然后算出加权平均值
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This refers to random variables that have fat-tailed distributions-- random variables that occasionally give you really big outcomes.
这就表示,服从长尾分布的随机变量,这些数据出现极端值的概率比较大
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That's different when you have continuous values-- you don't have P because it's always zero.
和离散型随机变量的分布不同的是,连续型随机变量的分布中,某一点的概率值始终是零
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