Scatter diagram, coefficient linear correlation, covariance, Sx and Sy.
a. sketch a scatter diagram of the following bivariate data.
Point

A

B

C

D

E

F

G

H

I

J

x

0

1

1

2

3

4

5

6

6

7

y

6

6

7

4

5

2

3

0

1

1

b. compute the covariance.
c. work out s_{x} and s_{y}.
d. Calculating r using different formulae.