自由度自由度（df）0 .1 00 .0 50 .0 1（df）0 .1 00 .0 50 .0 1n-m -1n-m -116.31412.70663.6573 0 11.6501.9682.59222.9204.3039.9253 0 21.6501.9682.59232.3533.1825.8413 0 31.6501.9682.59242.1322.7764.6043 0 41.6501.9682.59252.0152.5714.0323 0 51.6501.9682.59261.9432.4473.7073 0 61.6501.9682.59271.8952.3653.4993 0 71.6501.9682.59281.8602.3063.3553 0 81.6501.9682.59291.8332.2623.2503 0 91.6501.9682.5921 01.8122.2283.1693 1 01.6501.9682.5921 11.7962.2013.1063 1 11.6501.9682.5921 21.7822.1793.0553 1 21.6501.9682.5921 31.7712.1603.0123 1 31.6501.9682.5921 41.7612.1452.9773 1 41.6501.9682.5921 51.7532.1312.9473 1 51.6501.9682.5921 61.7462.1202.9213 1 61.6501.9672.5911 71.7402.1102.8983 1 71.6501.9672.5911 81.7342.1012.8783 1 81.6501.9672.5911 91.7292.0932.8613 1 91.6501.9672.5912 01.7252.0862.8453 2 01.6501.9672.5912 11.7212.0802.8313 2 11.6501.9672.5912 21.7172.0742.8193 2 21.6501.9672.5912 31.7142.0692.8073 2 31.6501.9672.5912 41.7112.0642.7973 2 41.6501.9672.5912 51.7082.0602.7873 2 51.6501.9672.5912 61.7062.0562.7793 2 61.6501.9672.5912 71.7032.0522.7713 2 71.6501.9672.5912 81.7012.0482.7633 2 81.6501.9672.5912 91.6992.0452.7563 2 91.6491.9672.5913 01.6972.0422.7503 3 01.6491.9672.5913 11.6962.0402.7443 3 11.6491.9672.5913 21.6942.0372.7383 3 21.6491.9672.5913 31.6922.0352.7333 3 31.6491.9672.5913 41.6912.0322.7283 3 41.6491.9672.5913 51.6902.0302.7243 3 51.6491.9672.5913 61.6882.0282.7193 3 61.6491.9672.5913 71.6872.0262.7153 3 71.6491.9672.5903 81.6862.0242.7123 3 81.6491.9672.5903 91.6852.0232.7083 3 91.6491.9672.5904 01.6842.0212.7043 4 01.6491.9672.5904 11.6832.0202.7013 4 11.6491.9672.5904 21.6822.0182.6983 4 21.6491.9672.5904 31.6812.0172.6953 4 31.6491.9672.5904 41.6802.0152.6923 4 41.6491.9672.590显著性水平（a ）显著性水平（a ）T 检验临界值表第 1 页，共 7 页451 .6 7 92 .0 1 42 .6 9 03451 .6 4 91 .9 6 72 ...
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