Table A-5, below, gives the Critical values of the Pearson Correlation Coefficient. The correlation is significant when the absolute value of r is greater than the value in the table for the given number of samples.

n a = 0.05 a = 0.01 0.950 0.990 0.878 0.959 0.811 0.917 0.754 0.875 0.707 0.834 0.666 0.798 0.632 0.765 0.602 0.735 12 0.576 0.708 0.553 0.684 0.532 0.661 15 0.514 0.641 16 0.497 0.623 0.482 0.606 0.468 0.590 0.456 0.575 20 0.444 0.561 21 0.433 0.549 0.423 0.537 0.413 0.526 0.404 0.515 0.396 0.505 0.388 0.496 0.381 0.487 0.374 0.479 29 0.367 0.471 0.361 0.463 35 0.334 0.430 0.312 0.403 0.294 0.380 0.279 0.361 0.266 0.345 0.254 0.330 0.244 0.317 0.235 0.306 0.227 0.296 08 0.220 0.286 85 0.213 0.278 90 0.207 0.270 95 0.202 0.263 100 0.197 0.256