Question

Study the following information
Covariance between X and Y series = - 17.8
Standard deviation of X series = 6.6
Standard deviation of Y series = 4.2
No. of pairs of observations = 20
The coefficient of correlation is
1) - 0.642
(2)
3) 0.253
(4)
0.642
-0.253​

Answer 1

Answer:

ok.... everything is fine...

Explanation:

Study the following information

Covariance between X and Y series = - 17.8

Standard deviation of X series = 6.6

Standard deviation of Y series = 4.2

No. of pairs of observations = 20

The coefficient of correlation is

1) - 0.642

(2)

3) 0.253

(4)

0.642

-0.253