I have three quistions:

Question: A sample of 6 persons was selected the value of their ages(x-variable) and their weights is given in th attached table.

(a) Find correlation coefficient?

(b) Find the regression equation?

(c) What is the predicted weight when age is 8.5 years?

Serial Number

Age(years)

(x)

Weight(kg.)

(y)

1

7

12

2

6

8

3

8

12

4

5

10

5

6

11

6

9

13