常用统计表
df(自由度)/p(概率)0.10.050.0250.010.0050.001
1 3.0777 6.313812.706231.820563.6567318.3088
2 1.8856 2.9200 4.3027 6.96469.924822.3271
3 1.6377 2.353
4 3.1824 4.5407 5.840910.2145
4 1.5332 2.1318 2.7764 3.7469 4.60417.1732
5 1.4759 2.0150 2.570
6 3.3649 4.0321 5.8934
6 1.4398 1.9432 2.4469 3.142
7 3.7074 5.2076
7 1.4149 1.8946 2.3646 2.9980 3.4995 4.7853
8 1.3968 1.8595 2.3060 2.8965 3.3554 4.5008
9 1.3830 1.8331 2.2622 2.8214 3.2498 4.2968
10 1.3722 1.8125 2.2281 2.7638 3.1693 4.1437
11 1.3634 1.7959 2.2010 2.7181 3.1058 4.0247
12 1.3562 1.7823 2.1788 2.6810 3.0545 3.9296
13 1.3502 1.7709 2.1604 2.6503 3.0123 3.8520
14 1.3450 1.7613 2.1448 2.6245 2.9768 3.7874
15 1.3406 1.7531 2.1314 2.6025 2.9467 3.7328
16 1.3368 1.7459 2.1199 2.5835 2.9208 3.6862
17 1.3334 1.7396 2.1098 2.5669 2.8982 3.6458
18 1.3304 1.7341 2.1009 2.5524 2.8784 3.6105
19 1.3277 1.7291 2.0930 2.5395 2.8609 3.5794
20 1.3253 1.7247 2.0860 2.5280 2.8453 3.5518
21 1.3232 1.7207 2.0796 2.5176 2.8314 3.5272
22 1.3212 1.7171 2.0739 2.5083 2.8188 3.5050
23 1.3195 1.7139 2.0687 2.4999 2.8073 3.4850
24 1.3178 1.7109 2.0639 2.4922 2.7969 3.4668
25 1.3163 1.7081 2.0595 2.4851 2.7874 3.4502
26 1.3150 1.7056 2.0555 2.4786 2.7787 3.4350
27 1.3137 1.7033 2.0518 2.4727 2.7707 3.4210
28 1.3125 1.7011 2.0484 2.4671 2.7633 3.4082
29 1.3114 1.6991 2.0452 2.4620 2.7564 3.3962
30 1.3104 1.6973 2.0423 2.4573 2.7500 3.3852
31 1.3095 1.6955 2.0395 2.4528 2.7440 3.3749
32 1.3086 1.6939 2.0369 2.4487 2.7385 3.3653
33 1.3077 1.6924 2.0345 2.4448 2.7333 3.3563
34 1.3070 1.6909 2.0322 2.4411 2.7284 3.3479
35 1.3062 1.6896 2.0301 2.4377 2.7238 3.3400
36 1.3055 1.6883 2.0281 2.4345 2.7195 3.3326
37 1.3049 1.6871 2.0262 2.4314 2.7154 3.3256
38 1.3042 1.6860 2.0244 2.4286 2.7116 3.3190
39 1.3036 1.6849 2.0227 2.4258 2.7079 3.3128
40 1.3031 1.6839 2.0211 2.4233 2.7045 3.3069
41 1.3025 1.6829 2.0195 2.4208 2.7012 3.3013
42 1.3020 1.6820 2.0181 2.4185 2.6981 3.2960
43 1.3016 1.6811 2.0167 2.4163 2.6951 3.2909
44 1.3011 1.6802 2.0154 2.4141 2.6923 3.2861
45 1.3006 1.6794 2.0141 2.4121 2.6896 3.2815
46 1.3002 1.6787 2.0129 2.4102 2.6870 3.2771
47 1.2998 1.6779 2.0117 2.4083 2.6846 3.2729
48 1.2994 1.6772 2.0106 2.4066 2.6822 3.2689
49 1.2991 1.6766 2.0096 2.4049 2.6800 3.2651
50 1.2987 1.6759 2.0086 2.4033 2.6778 3.2614
0.0005说明：临界值右侧的概率636.6192!表格主体是分位数的值，即x 31.5991
12.9240
8.6103
6.8688
5.9588
5.4079
5.0413 4.7809 4.5869 4.4370 4.3178 4.2208 4.1405 4.0728 4.0150 3.9651 3.9216 3.8834 3.8495 3.8193 3.7921 3.7676 3.7454 3.7251 3.7066 3.6896 3.6739 3.6594 3.6460 3.6335 3.6218 3.6109 3.6007 3.5911 3.5821 3.5737 3.5657 3.5581 3.5510 3.5442 3.5377 3.5316 3.5258 3.5203 3.5150
X P{X>x}
3.5099 3.5051 3.5004 3.4960