Question

If the two regression coefficient between x and y are 0.8 and 0.2, then the coefficient of correlation between them is

• A. 0.4
• B. 0.6
• C. 0.3
• D. 0.5

Answer 1

Answer: (A)

0.4

Answer 2

$r = + \sqrt{0.8 \times 0.2} = 0.4$.