【英文标准名称】:StandardPracticeforDerivationofDecisionPointandConfidenceLimitforStatisticalTestingofMeanConcentrationinWasteManagementDecisions
【原文标准名称】:在废物管理决策中主浓度静态试验用决策点和可信限度偏差的标准操作规程
【标准号】:ASTMD6250-1998(2003)
【标准状态】:现行
【国别】:
【发布日期】:1998
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D34.01.01
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:废物管理;错误确定的;假使;主浓度;假使;可信限度;决策错误;决策点;错误不确定的;数据质量目标
【英文主题词】:confidencelimit;dataqualityobjectives;decisionerror;decisionpoint;falsenegative;falsepositive;hypothesis;meanconcentration;presumption;wastemanagement
【摘要】:Environmentaldecisionsoftenrequirethecomparisonofastatistictoadecisionpointorthecomparisonofaconfidencelimittoaregulatorylimittodeterminewhichoftwoalternateactionsistheproperonetotake.Thispracticeprovidesalogicalbasisforstatisticallyderivingadecisionpoint,oraconfidencelimitasanalternative,fordifferentunderlyingpresumptions.Thispracticeisusefultousersofaplanningprocessgenerallyknownasthedataqualityobjectives(DQO)process(seePracticeD5792),inwhichcalculationofadecisionpointisneededforthedecisionrule.1.1Thispracticecoversalogicalbasisforthederivationofadecisionpointandconfidencelimitwhenmeanconcentrationisusedformakingenvironmentalwastemanagementdecisions.Thedeterminationofadecisionpointorconfidencelimitshouldbemadeinthecontextofthedefinedproblem.Themainfocusofthispracticeisonthedeterminationofadecisionpoint.1.2Inenvironmentalmanagementdecisions,thederivationofadecisionpointallowsadirectcomparisonofasamplemeanagainstthisdecisionpoint,wheresimilardecisionscanbemadebycomparingaconfidencelimitagainstaconcentrationlimit(forexample,aregulatorylimit,whichwillbeusedasasurrogatetermforanyconcentrationlimitthroughoutthispractice).Thispracticefocusesonmakingenvironmentaldecisionsusingthiskindofstatisticalcomparison.Otherfactors,suchasanyqualitativeinformationthatmaybeimportanttodecision-making,arenotconsideredhere.1.3Adecisionpointisaconcentrationlevelstatisticallyderivedbasedonaspecifieddecisionerrorandisusedinadecisionruleforthepurposeofchoosingbetweenalternativeactions.1.4Thispracticederivesthedecisionpointandconfidencelimitintheframeworkofastatisticaltestofhypothesisunderthreedifferentpresumptions.Therelationshipbetweendecisionpointandconfidencelimitisalsodescribed.1.5Determinationofdecisionpointandconfidencelimitsforstatisticsotherthanmeanconcentrationisnotcoveredinthispractice.Thispracticealsoassumesthatthedataarenormallydistributed.Whenthisassumptiondoesnotapply,atransformationtonormalizethedatamaybeneeded.Ifotherstatisticaltestssuchasnonparametricmethodsareusedinthedecisionrule,thispracticemaynotapply.Whentherearemanydatapointsbelowthedetectionlimit,themethodsinthispracticemaynotapply.
【中国标准分类号】:Z04
【国际标准分类号】:
【页数】:14P.;A4
【正文语种】: