NO.PZ2022123001000052
问题如下：
Which of the following statements best describes the relationship between correlation and covariance? The correlation between two random variables is their covariance standardized by the product of the variables:
选项：
A.variances
B.standard deviations
C.coefficient of variation
解释：
The correlation between two random variables is equal to the covariance between the variables divided by the product of the variables’ standard deviations.
能不能解释一下这个题具体考的是什么？我有点读不懂题目意思，说的是斜方差和标准差吗？
