[求助]1。2的一个问题

我不信佛

今天做题碰上这样一个题，联系册上没有见过
大家帮帮我解释一下这个选择题
谢谢各位了
Which of the following is not a feasible value for the correlation coefficient?
A  +1.2
B  +0.6
C    0
D  -0.6

php024

我选A

arsir1234

for correlation coefficient, the feasible value is between -1 and +1

arsir1234

A,

只能 -1 到 1之间