statistics
posted by statistics student .
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 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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