NO.PZ2020010801000005
问题如下:
The from regressing Y on X is the same as the of regressing X on Y. True or false?
解释:
True. The in a regression with a single explanatory variable is the squared sample correlation between X and Y.
R2为什么等于ρ2?老师课上只说了结论,不太明白为什么,可以证明吗