A Level Maths Notes: Critical Values for The Correlation Coefficient r
|
n |
1 - Tailed Test |
2 - Tailed Test |
||||
|
|
0.1 |
0.05 |
0.01 |
0.1 |
0.05 |
0.01 |
|
5 |
0.805 |
0.878 |
0.959 |
0.687 |
0.805 |
0.934 |
|
6 |
0.729 |
0.811 |
0.917 |
0.608 |
0.729 |
0.882 |
|
7 |
0.669 |
0.754 |
0.975 |
0.551 |
0.669 |
0.833 |
|
8 |
0.621 |
0.707 |
0.834 |
0.509 |
0.621 |
0.789 |
|
9 |
0.582 |
0.666 |
0.798 |
0.472 |
0.582 |
0.750 |
|
10 |
0.549 |
0.632 |
0.765 |
0.443 |
0.549 |
0.715 |
|
11 |
0.521 |
0.602 |
0/735 |
0.419 |
0.521 |
0.685 |
|
12 |
0.497 |
0.576 |
0.708 |
0.398 |
0.497 |
0.658 |
|
13 |
0.476 |
0.553 |
0.684 |
0.480 |
0.476 |
0.634 |
|
14 |
0.458 |
0.532 |
0.661 |
0.365 |
0.458 |
0.612 |
|
15 |
0.441 |
0.514 |
0.641 |
0.351 |
0.441 |
0.592 |
|
16 |
0.426 |
0.497 |
0.523 |
0.338 |
0.426 |
0.574 |
|
17 |
0.412 |
0.482 |
0.606 |
0.377 |
0.412 |
0.558 |
|
18 |
0.400 |
0.468 |
0.590 |
0.317 |
0.400 |
0.543 |
|
19 |
0.389 |
0.456 |
0.575 |
0.308 |
0.389 |
0.529 |
|
20 |
0.378 |
0.444 |
0.561 |
0.299 |
0.378 |
0.516 |
|
21 |
0.369 |
0.433 |
0.549 |
0.291 |
0.369 |
0.503 |
|
22 |
0.360 |
0.423 |
0.537 |
0.284 |
0.360 |
0.492 |
|
23 |
0.352 |
0.413 |
0.526 |
0.277 |
0.352 |
0.482 |
|
24 |
0.344 |
0.404 |
0.515 |
0.271 |
0.344 |
0.472 |
|
25 |
0.337 |
0.396 |
0.505 |
0.265 |
0.337 |
0.462 |
|
26 |
0.330 |
0.388 |
0.496 |
0.260 |
0.330 |
0.453 |
|
27 |
0.323 |
0.381 |
0.487 |
0.255 |
0.323 |
0.445 |
|
28 |
0.317 |
0.374 |
0.479 |
0.250 |
0.317 |
0.437 |
|
29 |
0.311 |
0.367 |
0.471 |
0.245 |
0.311 |
0.430 |
|
30 |
0.306 |
0.361 |
0.463 |
0.241 |
0.306 |
0.423 |
|
40 |
0,264 |
0.312 |
0.403 |
0.207 |
0.264 |
0.367 |
|
50 |
0.235 |
0.279 |
0.361 |
0.184 |
0.235 |
0.328 |
|
60 |
0.214 |
0.254 |
0.330 |
0.168 |
0.214 |
0.300 |
|
80 |
0.185 |
0.220 |
0.286 |
0.145 |
0.185 |
0.260 |
|
100 |
0.165 |
0.197 |
0.256 |
0.129 |
0.165 |
0.232 |
|
120 |
0.151 |
0.179 |
0.234 |
0.118 |
0.151 |
0.212 |
|
140 |
0.140 |
0.166 |
0.217 |
0.109 |
0.140 |
0.196 |
|
160 |
0.130 |
0.155 |
0.203 |
0.102 |
0.130 |
0.184 |
|
180 |
0.123 |
0.146 |
0.192 |
0.096 |
0.123 |
0.173 |
|
200 |
0.117 |
0.139 |
0.182 |
0.091 |
0.117 |
0.164 |
|
300 |
0.095 |
0.113 |
0.149 |
0.074 |
0.095 |
0.134 |
|
400 |
0.082 |
0.098 |
0.129 |
0.064 |
0.082 |
0.116 |
|
500 |
0.074 |
0.088 |
0.115 |
0.057 |
0.074 |
0.104 |