So we just showed you is that the variance of the difference of two independent random variables is equal to the sum of the variances.
所以我们刚刚向您展示了两个独立随机变量之差的方差等于方差之和。
单词 | independent random variable |
例句 |
原声例句
可汗学院:统计学(视频版) So we just showed you is that the variance of the difference of two independent random variables is equal to the sum of the variances. 所以我们刚刚向您展示了两个独立随机变量之差的方差等于方差之和。 |
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