ISO 13909-8-2001 硬煤和焦炭机械化采样第8部分：偏差试验方法

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【英文标准名称】:Hardcoalandcoke-Mechanicalsampling-Part8:Methodsoftestingforbias
【原文标准名称】:硬煤和焦炭机械化采样第8部分：偏差试验方法
【标准号】:ISO13909-8-2001
【标准状态】:现行
【国别】:国际
【发布日期】:2001-12
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC27
【标准类型】:()
【标准水平】:()
【中文主题词】:取样;误差检测;烟煤;偏差;矿物燃料;规范(验收);试样;焦炭;固体燃料;变化;燃料;试样制备;抽样方法;试验;缺陷;样品;煤
【英文主题词】:Bias;Bituminouscoal;Coal;Coke;Defects;Errordetection;Fossilfuels;Fuels;Hardcoal;Sampling;Samplingmethods;Solidfuels;Specification(approval);Specimenpreparation;Specimens;Testspecimens;Testing;Variations
【摘要】:ThispartofISO13909setsoutprinciplesandproceduresfortestingthebiasoftestsamplesofhardcoalsorcokes,takeninaccordancewithotherpartsofISO13909.Theuseofunivariatestatisticalmethodsonlyisaddressed.Theuseriscautionedthatthechanceoffalselyconcludingthatthereisabias,whennobiasexistsinanyoneofseveralvariablesmeasuredonthesamesetofsamples,issubstantiallygreaterthanforasinglevariable.Whileseveralvariablesmaybemeasured,thesinglevariableonwhichtheoutcomeofthetestwillbegovernedshallbedesignatedinadvance.NOTEInthetexttheterm'fuel'isusedwherebothcoalandcokewouldbeapplicableinthecontextandeither'coal'or'coke'whereonlyoneisapplicable.
【中国标准分类号】:D21
【国际标准分类号】:73_040;75_160_10
【页数】:31P.;A4
【正文语种】:英语