Which of the following most accurately describes how to standardize a random variable X?
A. Subtract the mean of X from X, and then divide that result by the standard deviation of the standard normal distribution.
B. Divide X by the difference between the standard deviation of X and the standard deviation of the standard normal distribution.
C. Subtract the mean of X from X, and then divide that result by the standard deviation of X.
Solution: C
There are two steps in standardizing a random variable X: Subtract the mean of X from X, and then divide that result by the standard deviation of X. This is represented by the following formula: Z = (X − μ)/σ.
求问老师为什么标准化不选A？这个不是正态分布的标准化吗？
