MATH 4311-A polling organization collected data on a sample

Question:1. A polling organization collected data on a sample of 60 registered voters regarding a tax on the market value of equity transactions as one remedy for the budget deficit.

Opinion about Market Tax Education High School College Grad. MBA

Favorable 15 5 0

Undecided 10 8 2

Unfavorable 0 2 18

a. Compute gamma for the table.

b. Compute tau b or tau c for the same data.

c. What accounts for the differences?

d. Decide which is more suitable for these data.

2. For the following data,

X Y

25 5

19 7

17 12

14 23

12 20

9 25

8 26

7 28

3 20

a. Calculate the correlation between X and Y.

b. Interpret the sign of the correlation.

c. Interpret the square of the correlation.

d. Plot the least-squares line.

e. Test for a linear relationship:

(1) Beta1 = 0.

(2) r = 0.

3) An F test.