In a regression problem, the slope = 0.40 The mean and standard deviation of the X variable are both 100. The mean and standard deviation of the Y variable are both 200. Find the correlation r.

In a regression problem, the slope = 0.40 The mean and standard deviation of the X variable are both 100. The mean and standard deviation of the Y variable are both 200. Find the correlation r.

In a regression problem, the slope = 0.40
The mean and standard deviation of the X variable are both 100.
The mean and standard deviation of the Y variable are both 200.
Find the correlation r.




a. -0.20
b. 0.20
c. 0.80
d. -0.80
e. 0.40


Answer: b. 0.20


Learn More :