Consider the following statements regarding lines of regression between two variables X and Y:
(A) The correlation between X and Y is the geometric mean of the regression coefficients of Y on X and X on Y.
(B) If the variables are uncorrelated, the two lines of regression (i.e. Y on X and X on Y) are perpendicular to each other
(C) If the regression co-efficient Y on X is greater than one, the co-efficient of X on Y must also be greater than one
Choose the most appropriate answer from the options given below:
1
(A) and (B) Only
2
(B) and (C) Only
3
(A) and (C) Only
4
(A), (B) and (C)