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387Appendix EFactors Helpful in ConstructingControl Charts for VariablesContinuedn 1/C 41.253321.128381.085401.063841.050941.042351.036241.031661.028111.025271.022961.021021.019401.018001.016801.015731.014811.013981.013241.012581.011971.011431.010931.01047B 30.000000.000000.000000.000000.030330.117700.185080.239120.283720.321280.353520.381620.406220.428260.447830.465740.481850.496560.510150.522720.534400.545140.555270.56478B 43.266572.568142.266032.088951.969671.882301.814921.760881.716281.678721.646481.618381.593781.571741.552171.534261.518151.503441.489851.477281.465601.454861.444731.43522B 50.000000.000000.000000.000000.028860.112920.178610.231790.275960.313360.345590.373770.398490.420690.440430.458520.474820.489710.503480.516230.528080.538980.549270.55893C 40.797880.886230.921320.939990.951530.959370.965030.969310.972660.975350.977560.979410.980970.982320.983480.984510.985410.986210.986930.987580.988170.988700.989190.98964A 32.658701.954401.628101.427291.287131.181911.099101.031660.975350.927390.885910.849540.817340.788540.762600.739050.717580.697870.679700.662890.647260.632690.619060.60628A 21.880601.023070.728510.576800.483320.419340.372550.336700.308210.285070.265820.249420.235330.223100.212340.202790.194260.186570.179600.173280.167480.162140.158690.15263A2.121301.732051.500001.341641.224741.133891.060661.000000.948680.904530.866030.832050.801780.774600.750000.727610.707110.688250.670820.654650.639600.625540.612370.600002345678910111213141516171819202122232425

388 Part V: AppendicesContinuedn D 10.0000.0000.0000.0000.0000.2050.3870.5460.6870.8120.9241.0261.1181.2041.2821.3561.4231.4871.5481.6061.6591.7101.7231.807D 23.6874.3574.6994.9185.0785.2035.3075.3945.4695.5345.5925.6465.6965.7405.7825.8205.8575.8915.9225.9505.9796.0065.9956.055D 30.00000.00000.00000.00000.00000.07580.13590.18380.22320.25590.28360.30760.32820.34680.36300.37790.39090.40310.41450.42510.43440.44320.44650.4597D 43.268622.573542.282182.114362.003951.924191.864071.816161.776801.744091.716391.692451.671851.653231.637031.622071.609071.596911.585541.574911.565591.556771.553511.54032d 30.8530.8880.8800.8640.8480.8330.8200.8080.7970.7870.7780.7700.7630.7560.7500.7440.7390.7340.7290.7240.7200.7160.7120.7081/d 20.886520.590670.485670.429920.394630.369820.351250.336700.324890.315160.306940.299760.293510.288020.283130.278710.274730.271080.267740.264690.261850.259200.259130.25439d 21.1281.6932.0592.3262.5342.7042.8472.9703.0783.1733.2583.3363.4073.4723.5323.5883.6403.6893.7353.7783.8193.8583.8593.931B 62.606332.275972.087741.963601.874201.805821.751451.706831.669361.637341.609531.585051.563451.543951.526531.510501.496001.482711.470381.458931.448261.438421.429111.420352345678910111213141516171819202122232425

387

Appendix E

Factors Helpful in Constructing

Control Charts for Variables

Continued

n 1/C 4

1.25332

1.12838

1.08540

1.06384

1.05094

1.04235

1.03624

1.03166

1.02811

1.02527

1.02296

1.02102

1.01940

1.01800

1.01680

1.01573

1.01481

1.01398

1.01324

1.01258

1.01197

1.01143

1.01093

1.01047

B 3

0.00000

0.00000

0.00000

0.00000

0.03033

0.11770

0.18508

0.23912

0.28372

0.32128

0.35352

0.38162

0.40622

0.42826

0.44783

0.46574

0.48185

0.49656

0.51015

0.52272

0.53440

0.54514

0.55527

0.56478

B 4

3.26657

2.56814

2.26603

2.08895

1.96967

1.88230

1.81492

1.76088

1.71628

1.67872

1.64648

1.61838

1.59378

1.57174

1.55217

1.53426

1.51815

1.50344

1.48985

1.47728

1.46560

1.45486

1.44473

1.43522

B 5

0.00000

0.00000

0.00000

0.00000

0.02886

0.11292

0.17861

0.23179

0.27596

0.31336

0.34559

0.37377

0.39849

0.42069

0.44043

0.45852

0.47482

0.48971

0.50348

0.51623

0.52808

0.53898

0.54927

0.55893

C 4

0.79788

0.88623

0.92132

0.93999

0.95153

0.95937

0.96503

0.96931

0.97266

0.97535

0.97756

0.97941

0.98097

0.98232

0.98348

0.98451

0.98541

0.98621

0.98693

0.98758

0.98817

0.98870

0.98919

0.98964

A 3

2.65870

1.95440

1.62810

1.42729

1.28713

1.18191

1.09910

1.03166

0.97535

0.92739

0.88591

0.84954

0.81734

0.78854

0.76260

0.73905

0.71758

0.69787

0.67970

0.66289

0.64726

0.63269

0.61906

0.60628

A 2

1.88060

1.02307

0.72851

0.57680

0.48332

0.41934

0.37255

0.33670

0.30821

0.28507

0.26582

0.24942

0.23533

0.22310

0.21234

0.20279

0.19426

0.18657

0.17960

0.17328

0.16748

0.16214

0.15869

0.15263

A

2.12130

1.73205

1.50000

1.34164

1.22474

1.13389

1.06066

1.00000

0.94868

0.90453

0.86603

0.83205

0.80178

0.77460

0.75000

0.72761

0.70711

0.68825

0.67082

0.65465

0.63960

0.62554

0.61237

0.60000

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5

6

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9

10

11

12

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25

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