Appendix 3. Critical Values of the t-Distribution

dfα
0.10.050.0250.010.005
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
221.3211.717 ...

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