Question

The coefficient of correlation for the following will be approximately

x :	2	4	5	6	3	6	8	10
y :	5	6	6	8	4	8	12	15

• A. 0.90
• B. 0.96
• C. – 0.90
• D. – 0.96

Answer 1

Answer: (B)

0.96

Answer 2

Here $\Sigma x = 44 , \Sigma y = 64$ ,

$\Sigma x ^ { 2 } = 290 , \Sigma y ^ { 2 } = 610$ and $\Sigma x y = 418$

Thus, with the help of formula $r _ { x y } = 0.96$.