Contents     Contents Index APA Style Guide Dr. P's Place

t Table
Critical values for a two-tailed test at several alpha levels.

Statistical Tables: [z]   [t]   [F]   [x2] 


df

Alpha (a) level

0.05

0.02

0.01

1

12.706

31.821

63.657

2

4.303

6.965

9.925

3

3.182

4.541

5.841

4

2.776

3.747

4.604

5

2.571

3.365

4.032

6

2.447

3.143

3.707

7

2.365

2.998

3.499

8

2.306

2.896

3.355

9

2.262

2.821

3.250

10

2.228

2.764

3.169

11

2.201

2.718

3.106

12

2.179

2.681

3.055

13

2.160

2.650

3.012

14

2.145

2.624

2.977

15

2.131

2.602

2.947

16

2.120

2.583

2.921

17

2.110

2.567

2.898

18

2.101

2.552

2.878

19

2.093

2.539

2.861

20

2.086

2.528

2.845

21

2.080

2.518

2.831

22

2.074

2.508

2.819

23

2.069

2.500

2.807

24

2.064

2.492

2.797

25

2.060

2.485

2.787

26

2.056

2.479

2.779

27

2.052

2.473

2.771

28

2.048

2.467

2.763

29

2.045

2.462

2.756

30

2.042

2.457

2.750

40

2.021

2.423

2.704

60

2.000

2.390

2.660

120

1.980

2.358

2.617

1.960

2.326

2.576


Contents Index APA Style Guide Dr. P's Place Copyright © 1997-2015 M. Plonsky, Ph.D.
Comments? mplonsky@uwsp.edu.