Question

4. Find the slope m for the regression line using the following set of data: (1,1),...

4. Find the slope m for the regression line using the following set of data: (1,1), (3,2), (7,5), (8,8), (10,11)

A. 1

B. 1.08

C. -0.89

D. -0.88

E. none of these

15. Find the y-intercept b for the regression line using the following set of data: (1,1), (3,2), (7,5), (8,8), (10,11)

A. 1

B. 1.08

C. -0.89

D. -0.88

E. none of these

Math   Statistics-And-Probability   
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Homework Answers

Answer #1

For the dataset: (1,1), (3,2), (7,5), (8,8), (10,11)

x y x2 y2 xy
1 1 1 1 1
3 2 9 4 6
7 5 49 25 35
8 8 64 64 64
10 11 100 121 110

Σ

 29 27 223 215 216

4.

The formula for the slope of the regression line is,

The correct option is B.

5.

The formula for the y-intercept of the regression line is,

The correct option is C.

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