Question: Use the following table to answer the questions. (Give your answers correct to two decimal places.)

x 1 1 3 3 5 5 7 7 9 9

y 6 1 2 5 5 4 3 1 3 4

(a) Find the equation of the line of best fit.

= _______+________ x

(b) Find the ordinates for the points on the line of best fit whose abscissas are x = 1, 3, 5, 7, and 9.

1_____

3_____

5_____

7_____

9_____

(c) Find the value of e for each of the points above (e = y - ).

y e y e

6 ______ 4________

1 ____ 3____

2 ____ 1 ____

5 ____ 3 ____

5 ____ 4 ____

(d) Find the variance se2 of those points about the line of best fit.

____________