COEFFICIENTr PEARSON'SCORRELATION (CriticalValues)
for Levelof Sionificance a One-Tailed Test
.05 dts(N-2) .10 1 0.988 2 0.900 3 0.805 4 0.729 5 0.669
6 7 8 I '10 11 12 '13 14 15 16 17 18 19 20
.025
.01
.005 .01
.0005 .001 dF(N-2) 21 22 23 24 25 26 27 28 29 30 40 60 120
.05 .10 0.352 0.344 0.337 0.330 0.323 0.317 0.311 0.306 0.301 0.296 0.257 0.211 0.150 0.073
.025 .05 0.413 0.404 0.396 0.388 0.381 0.374 0.367 0.361 0.355 0.349 0.304 0.250 0.178 0.087
.01 .02 0.482 0.472 0.462 0.453 0.445 0.437 0.430 0.423 0.416 0.409 0.358 0.295 0.210 0.103
.005 .0005 .01 0.526 0.515 0.505 0.496 0.487 0.479 0.471 0.463 0.456 0.449 0.393 0.325 0.232 0.114 .001 0.640 0.629 0.618 0.607 0.597 0.588 0.579 0.s70 0.562 0.554 0.490 0.408 0.294 0.146
for Levelof Sionificance a Two-Tailed Test
.0s .02 0.997 0.9995 0.950 0.980 0.878 0.934 0.8'11 0.882 0.755 0.833 0.707 0.666 0.632 0.602 0.576 0.553 0.532 0.514 0.497 0.482 0.468 0.456 0.444 0.433 0.423
0.9999 0.99999 0.990 0.999 0.959 0.991 0.971 0.974 0.875 0.951 0.928 0.898 0.872 0.847 0.823 0.801 0.780 0.760 0.742 0.725 0.708 0.693 0.679 0.665 0.652
0.621 0.582 0.549 0.521 0.497 0.476 0.457 0.441 0.426 0.412 0.400 0.389 0.378 0.369 0.360
0.789 0.834 0.750 0.798 0 . 7 1 5 0.765 0.685 0.658 0.735 0.708 0.634 0.612 0.592 0.574 0.558
0.684 0.661 0.641 0.623 0.606
0.542 0.590 0.529 0.575 0 . 5 1 5 0.561 0.503 0.549 0.492 0.537
1) Decideif you shouldusea One-Tailed Two-TailedTest: or a. One-Tail: if you have an a prior hypothesis to the sign (- or +) of the correlation. as b. Two-Tail: if you have no a prior hypothesis to the sign of the correlation. as 2) Calculatedf (degrees freedom): N (samplesize)-2). of 3) Locate this df in the table. 4) Use this row of thresholdvalues. 5) Read acrossthis row from left to right until you find a value greaterthan your calculatedr statistic. The P-value for your observation the P-value at the top of the first column to the left of your is 6) value. e . g . i f r f o r d f : l 5 ...