For two variables x and y, the two regression coefficients are b
| For two variables x and y, the two regression coefficients are byx = -3/2 and bxy = -1/6. The correlation coefficient between x and y is :
A. -1/4
B. 1/4
C. -1/2
D. 1/2
Please scroll down to see the correct answer and solution guide.
Right Answer is: C
SOLUTION
r =
=
= 
= 
bxy and byx both have negative sign. Therefore, we have to take negative sign.
Hence, correlation coefficient (r)=- 
