Spearman Rank Correlation Coefficeint Critical Values alpha .10 .05 .01 n 5 .900 -- -- 6 .829 .886 -- 7 .714 .786 .929 8 .643 .738 .881 9 .600 .700 .833 10 .564 .648 .794 11 .536 .618 .818 12 .497 .591 .780 13 .475 .566 .745 14 .457 .545 .716 15 .441 .525 .689 16 .425 .507 .666 17 .412 .490 .645 18 .399 .476 .625 19 .388 .462 .608 20 .377 .450 .591 21 .368 .438 .576 22 .359 .428 .562 23 .351 .418 .549 24 .343 .409 .537 25 .336 .400 .526 26 .329 .392 .515 27 .323 .385 .505 28 .317 .377 .496 29 .311 .370 .487 30 .305 .364 .478