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March 27, 2015

March 27, 2015

Posted by **Tom 12** on Tuesday, June 18, 2013 at 12:36pm.

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

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

y e y e

3 Incorrect: Your answer is incorrect. . 3

2 Incorrect: Your answer is incorrect. . 3

6 2

1 5

3 3

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

- math formulas needed -
**Tom 12**, Tuesday, June 18, 2013 at 4:09pmI do not want you to work them out, I just need help on formulas the ones in the book I do not understand so I was hoping there is a easier formula out there that someone might no of.

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