ASQ A2:1987

1.0 General terms1.1 Accept (acceptance sampling sense)1.2 Acceptable quality level (AQL)1.3 Acceptance number (attributes)1.4 Acceptance sampling1.5 Acceptance sampling plan1.6 Acceptance sampling scheme1.7 Acceptance sampling system1.8 Attributes, method of 1.9 Average outgoing quality (AOQ)1.10 Average outgoing quality limits (AOQL)1.11 Average sample number (ASN)1.12 Average total inspection (ATI)1.13 Characteristic1.14 Clearance number (i)1.15 Continuous sampling plan (CSP)1.16 Indifference zone1.17 Inspection1.18 Inspection, curtailed1.19 Inspection level1.20 Inspection, normal1.21 Inspection, 100 percent1.22 Inspection, rectifying1.23 Inspection, reduced1.24 Inspection, tightened1.25 Inspection lot1.26 Isolated lot1.27 Isolated sequence1.28 Item1.28.1 (Object sense)1.28.2 (Measurement sense)1.29 Limiting quality level (LQL)1.30 Lot, batch1.31 Lot-by-lot inspection1.32 Lot quality1.33 Lot size (N)1.34 Lot tolerance percent defective (LTPD)1.35 Observed value1.36 Operating characteristic curve (OC curve)1.36.1 For isolated or unique lots, or a lot from an isolated sequence1.36.2 For a continuous stream of lots1.36.3 For continuous sampling plans1.36.4 For special plans1.37 Original inspection1.38 p.95, p.50, p.10, p.05, etc.1.39 Probability of acceptance (Pa)1.40 Probability of rejection (Pr)1.41 Process average (quality level sense)1.42 Process quality1.43 Random sampling1.44 Reject (acceptance sampling sense)1.45 Rejectable quality level (RQL)1.46 Rejection number1.47 Resubmitted lot1.48 Risk, consumer's (beta)1.49 Risk, producer's (alpha)1.50 Sample (acceptance sampling sense)1.51 Sample size (n)1.52 Sampling interval1.53 Statistic1.54 Statistical measure1.55 Stratified sampling1.56 Switching rules1.57 Tolerance (specification sense)1.58 Tolerance limits (specification limits)1.58.1 Lower tolerance limit (LTL) (lower specification limit)1.58.2 Upper tolerance limit (UTL) (upper specification limit)1.59 Unacceptable quality level (UQL)1.60 Unique lot1.61 Unit1.62 Variables, method of1.63 Variant1.64 Variant unit2.0 Terms related to acceptance sampling using attributes events2.1 Event2.2 Nonconformity2.3 Nonconforming unit2.4 Defect2.5 Defective (defective unit)Statistical measures2.6 p2.6.1 Proportion2.6.2 Percent2.7 c2.7.1 c (count)2.7.2 Count per hundred units3.0 Types of acceptance sampling plans using attributes3.1 Continuous process with lots3.1.1 Single sampling3.1.2 Double sampling3.1.3 Multiple sampling3.1.4 Sequential sampling3.1.5 Chain sampling3.1.6 Skip-lot sampling3.2 Continuous process without lots3.2.1 Single-level continuous sampling3.2.2 Multi-level continuous sampling3.3 Isolated lots, unique lots, and lots in isolated sequences4.0 Indices for acceptance sampling4.1 AQL (acceptable quality level)4.2 LQL (limiting quality level)4.3 AOQL (average outgoing quality limit)4.4 Minimum cost5.0 Terms and symbols related to acceptance sampling using variables5.1 X bar - Average5.2 s - sample standard deviation5.3 Sigma 0 - specified standard deviation5.4 R - range5.5 X double bar, s bar, R bar - average values of X bar, x, R5.6 k - acceptability constant5.7 Q - quality statistic5.7.1 QL - lower quality statistic5.7.2 QU - upper quality statistic5.8 p5.8.1 pL (p sub L)5.8.2 pU (p sub U)5.9 M - maximum allowable percentage or proportion5.9.1 ML (M sub L)5.9.2 MU (M sub U)5.10 MAR - maximum average range5.11 MSD - maximum standard deviation6.0 Types of acceptance sampling plans using variables6.1 Single sampling by variables6.1.1 Known standard deviation plans6.1.1.1 k acceptance procedure6.1.1.2 M acceptance procedure6.1.2 Unknown standard deviation plans6.1.2.1 "s" method plans6.1.2.1.1 k acceptance procedure6.1.2.1.2 M acceptance procedure6.1.2.1.3 Graphical acceptance procedure6.1.2.2 "R" method plans6.1.2.2.1 k acceptance procedure6.1.2.2.2 M acceptance procedure6.1.2.2.3 Graphical acceptance procedure6.2 Double sampling by variables6.3 Sequential sampling by variables

Describes major acceptance sampling schemes in general use in industry for both attributes and variables measures involving percent or proportion of variant units in a lot batch or continuous stream of units.

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