This International Standard specifies, for quality levels expressed as nonconforming items per million items, procedures for estimating the quality level of a single entity (e.g. a lot) and, when the production process is in statistical control, for estimating the process quality level based on evidence from several samples. Procedures are also specified for using this information when selecting a suitable sampling plan so as to verify that the quality level of a given lot does not exceed a stated limiting quality level (LQL). For the case where no prior sample data is available, guidance is given for presuming a process quality level in selecting a plan.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 2<\/td>\n | National foreword <\/td>\n<\/tr>\n | ||||||
| 6<\/td>\n | Foreword <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | Introduction <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | 1 Scope 2 Normative references 3 Terms, definitions, symbols and abbreviated terms <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | 4 General principles 4.1 Objective 4.2 Quality assessment of product 4.3 Acceptance sampling of a lot <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 5 Estimation of quality levels in nonconforming items per million items 5.1 Prerequisites 5.2 Data sources 5.3 Estimation of p M , the process quality level <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 5.4 Sampling requirements and guidelines 5.5 Examples of estimation of the quality level 5.5.1 Example for single data source 5.5.2 Example for multiple data sources <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 5.6 Reporting results 5.6.1 Reporting fraction nonconforming in nonconforming items per million items 5.6.2 Period of data accumulation 5.6.3 Reporting requirements of estimated quality levels 5.6.4 Data exclusion options 6 Lot acceptance sampling requirements and procedures 6.1 Overview <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 6.2 Requirements and guidelines 6.3 Lot acceptance procedure <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 6.4 Illustrated use of Table 1 6.4.1 Assessed process quality level falls in a given interval for the selected LQL 6.4.2 Assessed process quality level does not fall in a given interval for the selected LQL <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 7 Single sampling plans indexed by LQL in nonconforming items per million items <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | Annex A (normative) Data exclusion <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | Annex B (informative) Underlying theory for generating point estimates of quality levelin fraction nonconforming <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | Annex C (informative) Statistical theory and calculation of Table 1 <\/td>\n<\/tr>\n | ||||||
| 27<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Acceptance sampling procedures by attributes. Specified quality levels in nonconforming items per million<\/b><\/p>\n |