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TDIST Table

TABLE: Cutoff points for the Student’s t distribution

For selected probabilities, α, the table shows the values tv,α such that P(tv > tv,α ) = α, where tv is a Student’s t random variable with v degrees of freedom. For example, the probability is .10 that a Student’s t random variable with 10 degrees of freedom exceeds 1.372.

vα
 .100.050.025.010.005
13.0786.31412.70631.82163.657
21.8862.9204.3036.9659.925
31.6382.3533.1824.5415.841
41.5332.1322.7763.7474.604
51.4762.0152.5713.3654.032
61.4401.9432.4473.1433.707
71.4151.8952.3652.9983.499
81.3971.8602.3062.8963.355
91.3831.8332.2622.8213.250
101.3721.8122.2282.7643.169
 
111.3631.7962.2012.7183.106
121.3561.7822.1792.6813.055
131.3501.7712.1602.6503.012
141.3451.7612.1452.6242.977
151.3411.7532.1312.6022.947
161.3371.7462.1202.5832.921
171.3331.7402.1102.5672.898
181.3301.7342.1012.5522.878
191.3281.7292.0932.5392.861
201.3251.7252.0862.5282.845
 
211.3231.7212.0802.5182.831
221.3211.7172.0742.5082.819
231.3191.7142.0692.5002.807
241.3181.7112.0642.4922.797
251.3161.7082.0602.4852.787
261.3151.7062.0562.4792.779
271.3141.7032.0522.4732.771
281.3131.7012.0482.4672.763
291.3111.6992.0452.4622.756
301.3101.6972.0422.4572.750
401.3031.6842.0212.4232.704
 
601.2961.6712.0002.3902.660
 
1.2821.6451.9602.3262.576


Reproduced with data from Biometrika Tables for Statisticians, vol. I (1966).