附表19-1 t值表
ν
P(双侧)0.05
0.01
0.001
ν
0.05
0.01
0.001
P(单侧)0.025
0.005
0.0005
0.025
0.005
0.0005
1
12.706
63.657
636.618
21
2.080
2.831
3.819
2
4.303
9.925
31.598
22
2.072
2.819
3.792
3
3.182
5.841
12.924
23
2.069
2.807
3.767
4
2.776
4.604
8.610
24
2.064
2.797
3.745
5
2.571
4.032
6.859
25
2.060
2.787
3.725
6
2.447
3.707
5.959
26
2.056
2.779
3.707
7
2.365
3.499
5.405
27
2.052
2.771
3.690
8
2.306
3.355
5.041
28
2.048
2.763
3.674
9
2.262
3.250
4.781
29
2.045
2.756
3.659
10
2.228
3.169
4.587
30
2.042
2.750
3.646
11
2.201
3.106
4.437
40
2.021
2.704
3.551
12
2.179
3.055
4.318
50
2.008
2.678
3.496
13
2.160
3.012
4.221
60
2.000
2.660
3.460
14
2.145
2.977
4.140
70
1.994
2.648
3.435
15
2.131
2.947
4.073
80
1.989
2.638
3.416
16
2.120
2.921
4.015
90
1.986
2.631
3.402
17
2.110
2.898
3.965
100
1.982
2.625
3.390
18
2.101
2.878
3.922
120
1.980
2.617
3.373
19
2.093
2.861
3.883
500
1.965
2.586
3.305
20
2.086
2.845
3.850
∞
1.960
2.576
3.291
P(双侧)0.05
0.01
0.001
ν
0.05
0.01
0.001
P(单侧)0.025
0.005
0.0005
0.025
0.005
0.0005
1
12.706
63.657
636.618
21
2.080
2.831
3.819
2
4.303
9.925
31.598
22
2.072
2.819
3.792
3
3.182
5.841
12.924
23
2.069
2.807
3.767
4
2.776
4.604
8.610
24
2.064
2.797
3.745
5
2.571
4.032
6.859
25
2.060
2.787
3.725
6
2.447
3.707
5.959
26
2.056
2.779
3.707
7
2.365
3.499
5.405
27
2.052
2.771
3.690
8
2.306
3.355
5.041
28
2.048
2.763
3.674
9
2.262
3.250
4.781
29
2.045
2.756
3.659
10
2.228
3.169
4.587
30
2.042
2.750
3.646
11
2.201
3.106
4.437
40
2.021
2.704
3.551
12
2.179
3.055
4.318
50
2.008
2.678
3.496
13
2.160
3.012
4.221
60
2.000
2.660
3.460
14
2.145
2.977
4.140
70
1.994
2.648
3.435
15
2.131
2.947
4.073
80
1.989
2.638
3.416
16
2.120
2.921
4.015
90
1.986
2.631
3.402
17
2.110
2.898
3.965
100
1.982
2.625
3.390
18
2.101
2.878
3.922
120
1.980
2.617
3.373
19
2.093
2.861
3.883
500
1.965
2.586
3.305
20
2.086
2.845
3.850
∞
1.960
2.576
3.291