Student's t Distribution — Critical Values

df 0.2 0.1 0.05 0.04 0.03 0.025 0.02 0.01 0.005 0.0005
11.3763.0786.3147.91610.57912.70615.89531.82163.657636.619
21.0611.8862.9203.3203.8964.3034.8496.9659.92531.599
30.9781.6382.3532.6052.9513.1823.4824.5415.84112.924
40.9411.5332.1322.3332.6012.7762.9993.7474.6048.610
50.9201.4762.0152.1912.4222.5712.7573.3654.0326.869
60.9061.4401.9432.1042.3132.4472.6123.1433.7075.959
70.8961.4151.8952.0462.2412.3652.5172.9983.4995.408
80.8891.3971.8602.0042.1892.3062.4492.8963.3555.041
90.8831.3831.8331.9732.1502.2622.3982.8213.2504.781
100.8791.3721.8121.9482.1202.2282.3592.7643.1694.587
110.8761.3631.7961.9282.0962.2012.3282.7183.1064.437
120.8731.3561.7821.9122.0762.1792.3032.6813.0554.318
130.8701.3501.7711.8992.0602.1602.2822.6503.0124.221
140.8681.3451.7611.8872.0462.1452.2642.6242.9774.140
150.8661.3411.7531.8782.0342.1312.2492.6022.9474.073
160.8651.3371.7461.8692.0242.1202.2352.5832.9214.015
170.8631.3331.7401.8622.0152.1102.2242.5672.8983.965
180.8621.3301.7341.8552.0072.1012.2142.5522.8783.922
190.8611.3281.7291.8502.0002.0932.2052.5392.8613.883
200.8601.3251.7251.8441.9942.0862.1972.5282.8453.850
210.8591.3231.7211.8401.9882.0802.1892.5182.8313.819
220.8581.3211.7171.8351.9832.0742.1832.5082.8193.792
230.8581.3191.7141.8321.9782.0692.1772.5002.8073.768
240.8571.3181.7111.8281.9742.0642.1722.4922.7973.745
250.8561.3161.7081.8251.9702.0602.1672.4852.7873.725
260.8561.3151.7061.8221.9672.0562.1622.4792.7793.707
270.8551.3141.7031.8191.9632.0522.1582.4732.7713.690
280.8551.3131.7011.8171.9602.0482.1542.4672.7633.674
290.8541.3111.6991.8141.9572.0452.1502.4622.7563.659
300.8541.3101.6971.8121.9552.0422.1472.4572.7503.646
310.8531.3091.6961.8101.9522.0402.1442.4532.7443.633
320.8531.3091.6941.8081.9502.0372.1412.4492.7383.622
330.8531.3081.6921.8061.9482.0352.1382.4452.7333.611
340.8521.3071.6911.8051.9462.0322.1362.4412.7283.601
350.8521.3061.6901.8031.9442.0302.1332.4382.7243.591
360.8521.3061.6881.8021.9422.0282.1312.4342.7193.582
370.8511.3051.6871.8001.9402.0262.1292.4312.7153.574
380.8511.3041.6861.7991.9392.0242.1272.4292.7123.566
390.8511.3041.6851.7981.9372.0232.1252.4262.7083.558
400.8511.3031.6841.7961.9362.0212.1232.4232.7043.551
410.8501.3031.6831.7951.9342.0202.1212.4212.7013.544
420.8501.3021.6821.7941.9332.0182.1202.4182.6983.538
430.8501.3021.6811.7931.9322.0172.1182.4162.6953.532
440.8501.3011.6801.7921.9312.0152.1162.4142.6923.526
450.8501.3011.6791.7911.9292.0142.1152.4122.6903.520
460.8501.3001.6791.7901.9282.0132.1142.4102.6873.515
470.8491.3001.6781.7891.9272.0122.1122.4082.6853.510
480.8491.2991.6771.7891.9262.0112.1112.4072.6823.505
490.8491.2991.6771.7881.9252.0102.1102.4052.6803.500
500.8491.2991.6761.7871.9242.0092.1092.4032.6783.496
600.8481.2961.6711.7811.9172.0002.0992.3902.6603.460
700.8471.2941.6671.7761.9121.9942.0932.3812.6483.435
800.8461.2921.6641.7731.9081.9902.0882.3742.6393.416
900.8461.2911.6621.7711.9051.9872.0842.3682.6323.402
1000.8451.2901.6601.7691.9021.9842.0812.3642.6263.390
1200.8451.2891.6581.7661.8991.9802.0762.3582.6173.373
1400.8441.2881.6561.7631.8961.9772.0732.3532.6113.361
1800.8441.2861.6531.7611.8931.9732.0692.3472.6033.345
2000.8431.2861.6531.7601.8921.9722.0672.3452.6013.340
5000.8421.2831.6481.7541.8851.9652.0592.3342.5863.310
10000.8421.2821.6461.7521.8831.9622.0562.3302.5813.300
0.8421.2821.6451.7511.8811.9602.0542.3262.5763.291
C.L. 60% 80% 90% 92% 94% 95% 96% 98% 99% 99.9%