## Pearson Product-Moment Correlation (PPMC) Coefficient Table of Critical Values

df = n – 2 n = # of pairs of data |
Level of significance for two-tailed test | |||

.10 | .05 | .02 | .01 | |

1 | .988 | .997 | .9995 | .9999 |

2 | .900 | .950 | .980 | .990 |

3 | .805 | .878 | .934 | .959 |

4 | .729 | .811 | .882 | .917 |

5 | .669 | .754 | .833 | .874 |

6 | .622 | .707 | .789 | .834 |

7 | .582 | .666 | .750 | .798 |

8 | .549 | .632 | .716 | .765 |

9 | .521 | .602 | .685 | .735 |

10 | .497 | .576 | .658 | .708 |

11 | .476 | .553 | .634 | .684 |

12 | .458 | .532 | .612 | .661 |

13 | .441 | .514 | .592 | .641 |

14 | .426 | .497 | .574 | .628 |

15 | .412 | .482 | .558 | .606 |

16 | .400 | .468 | .542 | .590 |

17 | .389 | .456 | .528 | .575 |

18 | .378 | .444 | .516 | .561 |

19 | .369 | .433 | .503 | .549 |

20 | .360 | .423 | .492 | .537 |

21 | .352 | .413 | .482 | .526 |

22 | .344 | .404 | .472 | .515 |

23 | .337 | .396 | .462 | .505 |

24 | .330 | .388 | .453 | .495 |

25 | .323 | .381 | .445 | .487 |

26 | .317 | .374 | .437 | .479 |

27 | .311 | .367 | .430 | .471 |

28 | .306 | .361 | .423 | .463 |

29 | .301 | .355 | .416 | .456 |

30 | .296 | .349 | .409 | .449 |

35 | .275 | .325 | .381 | .418 |

40 | .257 | .304 | .358 | .393 |

45 | .243 | .288 | .338 | .372 |

50 | .231 | .273 | .322 | .354 |

60 | .211 | .250 | .295 | .325 |

70 | .195 | .232 | .274 | .302 |

80 | .183 | .217 | .256 | .284 |

90 | .173 | .205 | .242 | .267 |

100 | .164 | .195 | .230 | .254 |

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