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Number of years of experience x -Independent Number of new policies written annually Y dependent yi yi 2 17 4 34 289 5 22 25

Number of years of experience

x -Independent

Number of new policies written annually

Y dependent

yi yi
2 17 4 34 289
5 22 25 110 484
7 34 49 238 1156
6 37 36 222 1369
12 50 144 600 2500
9 41 81 369 1681
5 13 25 65 169
20 48 400 960 2304
13 39 169 507 1521
4 20 16 80 400
10 35 100 350 1225
20 63 400 1260 3969
=113 Yi = 419 1449 yi 4795 y17067

1. using appropriate computational formulae find the least-square regression line.

2. Interpret the y- intercepts of regression equation in question 1 above.

3. Calculate the Pearson's correlation coefficient for the above data

4. interpret the correlation coefficient calculate in question 3 above

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