SPC 表2 常態分配常數表

(表2) 常態分配統計量抽樣分配常數表

樣本大小

(ｎ) m3 d2 d3 c2 c3 c4 c5

2

3

4

5  1.000

1.160

1.090

1.198  1.128

1.693

2.059

2.326  0.853

0.888

0.880

0.864  0.564

0.724

0.798

0.841  0.426

0.378

0.337

0.305  0.798

0.886

0.921

0.940  0.603

0.463

0.389

0.341

6

7

8

9

10 1.135

1.214

1.160

1.223

1.176 2.534

2.704

2.847

2.970

3.078 0.848

0.833

0.820

0.808

0.797 0.868

0.888

0.903

0.914

0.923 0.281

0.261

0.245

0.232

0.220 0.952

0.959

0.965

0.969

0.973 0.308

0.282

0.262

0.246

0.232

11

12

13

14

15 1.228

1.188

1.232

1.196

1.235 3.173

3.258

3.336

3.407

3.472 0.787

0.778

0.770

0.763

0.756 0.930

0.936

0.941

0.945

0.949 0.210

0.202

0.194

0.187

0.181 0.975

0.978

0.979

0.981

0.982 0.221

0.211

0.202

0.194

0.187

16

17

18

19

20 1.203

1.237

1.208

1.239

1.212 3.532

3.588

3.640

3.689

3.735 0.750

0.744

0.739

0.733

0.729 0.952

0.955

0.958

0.960

0.962 0.175

0.170

0.165

0.161

0.157 0.984

0.985

0.985

0.986

0.987 0.181

0.175

0.170

0.166

0.161