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

Question

x 1 1 3 3 5 5 7 7 9 9
y 3 2 6 1 3 3 3 2 5 3

(a) Find the equation of the line of best fit.
y hat = + x

(ii) Graph this equation on a scatter diagram. (Do this on paper. Your instructor may ask you to turn in this work.)

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

Answer 1

a) yhat= 2.6 + .1x