Given are five observations for two variables,

x

and

y

.

x

i

3 12

6 20 14

y

i

55 40

55

10

15

a.

Develop a scatter diagram for these data.

b. w

hat does the scatter diagram developed in part (a) indicate about the relationship

between the two variables?

c.

Try to approximate the relationship between

x

and

y

by drawing a straight line through

the data.

d.

Develop the estimated regression equation by computing the values of

b

0

and

b

1

using

equations (14.6) and (14.7).

e.

Use the estimated regression equation to predict the value of

y

when

x

=

10.