Question: For the following data, do the following:

Calculate the correlation between X and Y .

Interpret the sign of the correlation.

Interpret the square of the correlation.

Plot the least-squares line.

Test for a linear relationship. What do the results indicate?

1. b 1 5 0.
2. r 5 0.
3. An F test.

X Y

25 5

19 7

17 12

14 23

12 20

9 25

8 26

7 28

3 20

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