Applications of Reference Materials in Analytical Chemistry

Annex B: Statistical Tables

Table A1: Critical Values for the Student t test

v 1T

60%

75%

80%

85%

90%

95%

97.5%

99%

99.5%

99.9%

99.95%

v 2T

20%

50%

60%

70%

80%

90%

95%

98%

99%

99.8%

99.9%

1

0.3249

1.0000

1.3764

1.963

3.078

6.314

12.706

31.821

63.657

318.3

636.62

2

0.2887

0.8165

1.0607

1.386

1.886

2.920

4.303

6.965

9.925

22.33

31.596

3

0.2767

0.7649

0.9785

1.250

1.638

2.353

3.182

4.541

5.841

10.21

12.941

4

0.2707

0.7407

0.9410

1.190

1.533

2.132

2.776

3.747

4.604

7.173

8.610

5

0.2672

0.7267

0.9195

1.156

1.476

2.015

2.571

3.365

4.032

5.893

6.869

6

0.2648

0.7176

0.9057

1.134

1.440

1.943

2.447

3.143

3.707

5.208

5.959

7

0.2632

0.7111

0.8960

1.119

1.415

1.895

2.365

2.998

3.499

4.785

5.408

8

0.2619

0.7064

0.8889

1.108

1.397

1.860

2.306

2.896

3.355

4.501

5.041

9

0.2610

0.7027

0.8834

1.100

1.383

1.833

2.262

2.821

3.250

4.297

4.781

10

0.2602

0.6998

0.8791

1.093

1.372

1.812

2.228

2.764

3.169

4.144

4.587

11

0.2596

0.6974

0.8755

1.088

1.363

1.796

2.201

2.718

3.106

4.025

4.437

12

0.2590

0.6955

0.8726

1.083

1.356

1.782

2.179

2.681

3.055

3.930

4.318

13

0.2586

0.6938

0.8702

1.079

1.350

1.771

2.160

2.650

3.012

3.852

4.221

14

0.2582

0.6924

0.8681

1.076

1.345

1.761

2.145

2.624

2.977

3.787

4.140

15

0.2579

0.6912

0.8662

1.074

1.341

1.753

2.131

2.602

2.947

3.733

4.073

16

0.2576

0.6901

0.8647

1.071

1.337

1.746

2.120

2.583

2.921

3.686

4.015

17

0.2573

0.6892

0.8633

1.069

1.333

1.740

2.110

2.567

2.898

3.646

3.965

18

0.2571

0.6884

0.8620

1.067

1.330

1.734

2.101

2.552

UNLIMITED FREE
ACCESS
TO THE WORLD'S BEST IDEAS

SUBMIT
Already a GlobalSpec user? Log in.

This is embarrasing...

An error occurred while processing the form. Please try again in a few minutes.

Customize Your GlobalSpec Experience

Category: Quartz Tube and Rod
Finish!
Privacy Policy

This is embarrasing...

An error occurred while processing the form. Please try again in a few minutes.