【英文标准名称】:PracticeforCalculatingSampleSizetoEstimate,withaSpecifiedTolerableError,theAverageforaCharacteristicofaLotorProcess
【原文标准名称】:评估带指定允许误差的一批产品或一次加工过程特性曲线均值的样品尺寸计算用实施规程
【标准号】:ANSI/ASTME122-2007
【标准状态】:作废
【国别】:美国
【发布日期】:2007
【实施或试行日期】:2007-10-23
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:质量保证;统计学
【英文主题词】:Average;Materials;Quality;Qualityassurance;Samplingmethods;Statistics;Testing
【摘要】:Thispracticecoverssimplemethodsforcalculatinghowmanyunitstoincludeinarandomsampleinordertoestimatewithaspecifiedprecision,ameasureofqualityforalltheunitsofalotofmaterial,orproducedbyaprocess.Thispracticewillclearlyindicatethesamplesizerequiredtoestimatetheaveragevalueofsomepropertyorthefractionofnonconformingitemsproducedbyaproductionprocessduringthetimeintervalcoveredbytherandomsample.Iftheprocessisnotinastateofstatisticalcontrol,theresultwillnothavepredictivevalueforimmediate(future)production.Thepracticetreatsthecommonsituationwherethesamplingunitscanbeconsideredtoexhibitasingle(overall)sourceofvariability;itdoesnottreatmulti-levelsourcesofvariability.
【中国标准分类号】:A41
【国际标准分类号】:03_120_30
【页数】:
【正文语种】:英语