Appendix C
Table C.1 Significance levels for the Pearson product-moment coefficient of correlation
| Degrees of Freedom | 0.05 | 0.01 |
|---|---|---|
(N– 2) |
||
1 |
0.997 |
0.9999 |
2 |
0.950 |
0.990 |
3 |
0.878 |
0.959 |
4 |
0.811 |
0.917 |
5 |
0.754 |
0.874 |
6 |
0.207 |
0.834 |
7 |
0.666 |
0.798 |
8 |
0.632 |
0.765 |
9 |
0.602 |
0.735 |
10 |
0.576 |
0.708 |
11 |
0.553 |
0.684 |
12 |
0.512 |
0.661 |
13 |
0.514 |
0.641 |
14 |
0.497 |
0.623 |
15 |
0.482 |
0.606 |
16 |
0.468 |
0.590 |
17 |
0.456 |
0.575 |
18 |
0.444 |
0.561 |
19 |
0.433 |
0.549 |
20 |
0.423 |
0.537 |
21 |
0.413 |
0.526 |
22 |
0.404 |
0.515 |
23 |
0.396 |
0.505 |
24 |
0.388 |
0.496 |
25 |
0.381 |
0.487 |
26 |
0.374 |
0.479 |
27 |
0.367 |
0.471 |
28 |
0.361 |
0.463 |
29 |
0.355 |
0.456 |
30 |
0.349 |
0.449 |
35 |
0.325 |
0.418 |
40 |
0.304 |
0.393 |
45 |
0.288 |
0.372 |
50 |
0.273 |
0.354 |
60 |
0.250 |
0.325 |
70 |
0.232 |
0.303 |
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