Degré de liberté

Niveau de signification pour test unilatéral

0,010

0,05

0,025

0,01

0,005

0,0005

niveau de signification pour test bilatéral

0,20

0,10

0,05

0,02

0,01

0,001

1

3,078

6,314

12,706

31,821

63,657

636,619

2

1,886

2,920

4,303

6,965

9,925

31,598

3

1,638

2,353

3,182

4,541

5,841

12,941

4

1,533

2,132

2,776

3,747

4,604

8,610

5

1,476

2,015

2,571

3,365

4,032

6,859

6

1,440

1,943

2,447

3,143

3,707

5,959

7

1,415

1,895

2,365

2,998

3,499

5,405

8

1,397

1,860

2,306

2,896

3,355

5,041

9

1,383

1,833

2,362

2,821

3,250

4,781

10

1,372

1,812

2,228

2,764

3,169

4,587

11

1,363

1,796

2,201

2,718

3,106

4,437

12

1,356

1,782

2,179

2,681

3,055

4,318

13

1,350

1,771

2,160

2,650

3,012

4,221

14

1,345

1,761

2,145

2,624

2,977

4,140

15

1,341

1,753

2,131

2,602

2,947

4,073

16

1,337

1,746

2,120

2,583

2,921

4,015

17

1,333

1,740

2,110

2,567

2,898

3,965

18

1,330

1,734

2,101

2,552

2,878

3,922

19

1,328

1,729

2,093

2,539

2,861

3,883

20

1,325

1,725

2,086

2,528

2,845

3,850

21

1,323

1,721

2,080

2,518

2,831

3,819

22

1,321

1,717

2,074

2,508

2,819

3,792

23

1,319

1,714

2,069

2,500

2,807

3,767

24

1,318

1,711

2,064

2,492

2,797

3,745

25

1,316

1,708

2,060

2,485

2,787

3,725

26

1,315

1,706

2,056

2,479

2,779

3,707

27

1,314

1,703

2,052

2,473

2,771

3,690

28

1,313

1,701

2,048

2,467

2,763

3,674

29

1,311

1,699

2,045

2,462

2,756

3,659

30

1,310

1,697

2,042

2,457

2,750

3,646

40

1,303

1,684

2,021

2,423

2,704

3,551

60

1,296

1,671

2,000

2,390

2,660

3,460

120

1,289

1,658

1,980

2,3587

2,617

3,373

°

1,282

1,645

1,960

2,336

2,576

3,291