Tuesday

July 29, 2014

July 29, 2014

Posted by **statistics student** on Friday, November 1, 2013 at 3:46am.

x 1 1 3 3 5 5 7 7 9 9

y 3 1 3 1 6 3 6 1 4 4

(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

Incorrect: Your answer is incorrect.

3

Incorrect: Your answer is incorrect.

5

Incorrect: Your answer is incorrect.

7

Incorrect: Your answer is incorrect.

9

Incorrect: Your answer is incorrect.

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

y e y e

3 3

1 6

3 1

1 4

6 4

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

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