The regression lines of Y on X and of X on Y are respectively Y=aX+b and X=cY+d. If rXY is the correlation coefficient between X and Y, and sX/sY is the ratio of standard deviation of X to standard deviation of Y, then the pair (rXY,sX/sY) would assume the value:

Q6Section I (Objective (Q1–Q80))6 of 80

Descriptive Statistics — correlation and SD ratio from regression lines

The regression lines of Y on X and of X on Y are respectively $Y=aX+b$ and $X=cY+d$ . If $r_{XY}$ is the correlation coefficient between X and Y, and $\frac{s_X}{s_Y}$ is the ratio of standard deviation of X to standard deviation of Y, then the pair $\left(r_{XY},\frac{s_X}{s_Y}\right)$ would assume the value:

Pick an option to check your answer. In a mock test a wrong answer here costs 0.83 mark.

Keyboard: A–D answer · S solution · ←/→ previous/next