TABLE B-1        Standard Deviation Method .
 Master Table for Normal (& Tightened) Inspection for Plans Based      .
      on Variability Unknown   (Single Spec. Lim.–Form 1)              .

Sample size  Sample ------------- AQL (normal inspection) ------------ .
code letter   size   ---   .10   .15   .25 :  .40   .65  1.00  1.50    .
                      k     k     k     k  :   k     k     k     k     .
  ---------------+------+-----+-----+------+-----+-----+-----+----------.
     B         3      |     |     |     |  :   |     |     v     v     .
     C         4      |     |     |     |  :   |     v   1.45  1.34    .
  ---------------+------+-----+-----+------+-----+-----+-----+----------.
     D         5      |     |     |     v  :   v   1.65  1.53  1.40    .
     E         7      |     |     v   2.00 : 1.88  1.75  1.62  1.50    .
     F        10      v     v   2.24  2.11 : 1.98  1.84  1.72  1.58    .
  ---------------+------+-----+-----+------+-----+-----+-----+----------.
     G        15    2.53  2.42  2.32  2.20 : 2.06  1.91  1.79  1.65    .
     H        20    2.58  2.47  2.36  2.24 : 2.11  1.96  1.82  1.69    .
     I        25    2.61  2.50  2.40  2.26 : 2.14  1.98  1.85  1.72    .
  ---------------+------+-----+-----+------+-----+-----+-----+----------.
     J        35    2.65  2.54  2.45  2.31 : 2.18  2.03  1.89  1.76    .
  ---------------+------+-----+-----+------+-----+-----+-----+----------.
     K        50    2.71  2.60  2.50  2.35 : 2.22  2.08  1.93  1.80    .
     L        75    2.77  2.66  2.55  2.41 : 2.27  2.12  1.98  1.84    .
     M       100    2.80  2.69  2.58  2.43 : 2.29  2.14  2.00  1.86    .
  ---------------+------+-----+-----+------+-----+-----+-----+----------.
     N       150    2.84  2.73  2.61  2.47 : 2.33  2.18  2.03  1.89    .
     P       200    2.85  2.73  2.62  2.47 : 2.33  2.18  2.04  1.89    .
  ---------------+------+-----+-----+------+-----+-----+-----+----------.
                     .10   .15   .25   .40 :  .65  1.00  1.50  2.50    .
                 ------------- AQL (tightnened inspection) ----------- .
                                           :                           .

                                           :
Sample size  Sample ------------- AQL (normal inspection) ------------ .
code letter   size              2.50  4.00 : 6.50 10.00                .
                                  k     k  :   k     k      alpha (%)  .
  ---------------+------+-----+-----+------+-----+-----+-----+----------.
     B         3                1.12  .958 : .765  .566       11       .
     C         4                1.17  1.01 : .814  .617       10       .
  ---------------+------+-----+-----+------+-----+-----+-----+----------.
     D         5                1.24  1.07 : .874  .675       10       .
     E         7                1.33  1.15 : .955  .755       10       .
     F        10                1.41  1.23 : 1.03  .828       10       .
  ---------------+------+-----+-----+------+-----+-----+-----+----------.
     G        15                1.47  1.30 : 1.09  .886        9-9.1   .
     H        20                1.51  1.33 : 1.12  .917        8-8.1   .
     I        25                1.53  1.35 : 1.14  .936        7-7.1   .
  ---------------+------+-----+-----+------+-----+-----+-----+----------.
     J        35                1.57  1.39 : 1.18  .969        5.5-6.1 .
  ---------------+------+-----+-----+------+-----+-----+-----+----------.
     K        50                1.61  1.42 : 1.21  1.00        5       .
     L        75                1.65  1.46 : 1.24  1.03        4       .
     M       100                1.67  1.48 : 1.26  1.05        3       .
  ---------------+------+-----+-----+------+-----+-----+-----+----------.
     N       150                1.70  1.51 : 1.29  1.07        2       .
     P       200                1.70  1.51 : 1.29  1.07        1       .
  ---------------+------+-----+-----+------+-----+-----+-----+----------.
                                4.00  6.50 :10.00   ---                .
                 ------------- AQL (tightnened inspection) ----------- .

AQL values in percent defective
Arrows: use first sampling plan below arrow, ie., both sample size and k.
alpha: calculated (approximately; not in the standard)
Similar to ANSI/ASQC Z1.9-1980 (modified Mil-Std 414)


Created: ~2001 — Last update: 2005-02-13