df\p .005 .01 .025 .05 .10 .90 .95 .975 .99 .995 1 .00004 .00016 .00098 .0039 .0158 2.71 3.84 5.02 6.63 7.88 2 .0100 .0201 .0506 .1026 .2107 4.61 5.99 7.38 9.21 10.60 3 .0717 .115 .216 .352 .584 6.25 7.81 9.35 11.34 12.84 4 .207 .297 .484 .711 1.064 7.78 9.49 11.14 13.28 14.86 5 .412 .554 .831 1.15 1.61 9.24 11.07 12.83 15.09 16.75 6 .676 .872 1.24 1.64 2.20 10.64 12.59 14.45 16.81 18.55 7 .989 1.24 1.69 2.17 2.83 12.02 14.07 16.01 18.48 20.28 8 1.34 1.65 2.18 2.73 3.49 13.36 15.51 17.53 20.09 21.96 9 1.73 2.09 2.70 3.33 4.17 14.68 16.92 19.02 21.67 23.59 10 2.16 2.56 3.25 3.94 4.87 15.99 18.31 20.48 23.21 25.19 11 2.60 3.05 3.82 4.57 5.58 17.28 19.68 21.92 24.73 26.76 12 3.07 3.57 4.40 5.23 6.30 18.55 21.03 23.34 26.22 28.30 13 3.57 4.11 5.01 5.89 7.04 19.81 22.36 24.74 27.69 29.82 14 4.07 4.66 5.63 6.57 7.79 21.06 23.68 26.12 29.14 31.32 15 4.6 5.23 6.26 7.26 8.55 22.31 25.00 27.49 30.58 32.80 16 5.14 5.81 6.91 7.96 9.31 23.54 26.30 28.85 32.00 34.27 18 6.26 7.01 8.23 9.39 10.86 25.99 28.87 31.53 34.81 37.16 20 7.43 8.26 9.59 10.85 12.44 28.41 31.41 34.17 37.57 40.00 24 9.89 10.86 12.40 13.85 15.66 33.20 36.42 39.36 42.98 45.56 30 13.79 14.95 16.79 18.49 20.60 40.26 43.77 46.98 50.89 53.67 40 20.71 22.16 24.43 26.51 29.05 51.81 55.76 59.34 63.69 66.77 60 35.53 37.48 40.48 43.19 46.46 74.40 79.08 83.30 88.38 91.95 120 83.85 86.92 91.58 95.70 100.62 140.23 146.57 152.21 158.95 163.64