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Section B.4 Chi-Square Probability Table

Figure B.4.1. Areas in the chi-square table always refer to the right tail.
Upper tail 0.3 0.2 0.1 0.05 0.02 0.01 0.005 0.001
df 1 1.07 1.64 2.71 3.84 5.41 6.63 7.88 10.83
2 2.41 3.22 4.61 5.99 7.82 9.21 10.60 13.82
3 3.66 4.64 6.25 7.81 9.84 11.34 12.84 16.27
4 4.88 5.99 7.78 9.49 11.67 13.28 14.86 18.47
5 6.06 7.29 9.24 11.07 13.39 15.09 16.75 20.52
6 7.23 8.56 10.64 12.59 15.03 16.81 18.55 22.46
7 8.38 9.80 12.02 14.07 16.62 18.48 20.28 24.32
8 9.52 11.03 13.36 15.51 18.17 20.09 21.95 26.12
9 10.66 12.24 14.68 16.92 19.68 21.67 23.59 27.88
10 11.78 13.44 15.99 18.31 21.16 23.21 25.19 29.59
11 12.90 14.63 17.28 19.68 22.62 24.72 26.76 31.26
12 14.01 15.81 18.55 21.03 24.05 26.22 28.30 32.91
13 15.12 16.98 19.81 22.36 25.47 27.69 29.82 34.53
14 16.22 18.15 21.06 23.68 26.87 29.14 31.32 36.12
15 17.32 19.31 22.31 25.00 28.26 30.58 32.80 37.70
16 18.42 20.47 23.54 26.30 29.63 32.00 34.27 39.25
17 19.51 21.61 24.77 27.59 31.00 33.41 35.72 40.79
18 20.60 22.76 25.99 28.87 32.35 34.81 37.16 42.31
19 21.69 23.90 27.20 30.14 33.69 36.19 38.58 43.82
20 22.77 25.04 28.41 31.41 35.02 37.57 40.00 45.31
25 28.17 30.68 34.38 37.65 41.57 44.31 46.93 52.62
30 33.53 36.25 40.26 43.77 47.96 50.89 53.67 59.70
40 44.16 47.27 51.81 55.76 60.44 63.69 66.77 73.40
50 54.72 58.16 63.17 67.50 72.61 76.15 79.49 86.66
Table B.4.2.