问题如下:
How are quantile functions related to the CDF? When X is a continuous random variable, when does this relationship not hold?
选项:
解释:
The quantile function is the inverse of the CDF function.
That is, if returns the CDF value of X, then is the quantile function.
The CDF function is not invertible if there are regions where there is no probability. This corresponds to a jump in the CDF.
这道题什么意思 讲义里没讲啊