NO.PZ2015120604000092
问题如下:
The z-value of standard normal distribution are used to measure the distance between the mean and any other point, this distance is measured in unit of:
选项:
A. mode.
B. standard deviation.
C. variance.
解释:
B is correct
B is the definition of z-value.
能翻译一下题干么,没太看懂