ASTM D4460-1997(2009) 计算已由其他试验方法计算出的值的精确极限值的标准实施规程

作者:标准资料网 时间:2024-05-19 16:29:29  浏览:9857   来源:标准资料网

【英文标准名称】:StandardPracticeforCalculatingPrecisionLimitsWhereValuesareCalculatedfromOtherTestMethods
【原文标准名称】:计算已由其他试验方法计算出的值的精确极限值的标准实施规程
【标准号】:ASTMD4460-1997(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:1997
【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】:D04.94
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:precisionlimits;standarddeviation;Calculatingtestvalues;Dataanalysis--pavingapplications;Precision;Randomvariables/variation;Statisticalmethods;Variability
【摘要】:Precisionlimitsforatestresultthatiscalculatedbyaddition,subtraction,multiplication,ordivisionoftwoothertestresultsthathavevalidprecisionlimitscanbecalculateddirectly.Thissavesthecostanddelayofconductinganinterlaboratorystudy.Attheheartofstatisticaltheoryistheconceptofafrequencydistributionofarandomvariable.Theprecisionlimitoftherandomvariableisdeterminedbythestandarddeviationofthevariable.Thestandarddeviationofarandomvariablethatisthesum,difference,product,orquotientoftwootherrandomvariablescanbecalculatedsimplysolongastheindividualvariablesareindependentandthestandarddeviationsaresmallrelativetotheirmeanvalues.TheserestrictionsareusuallymetinASTMmethods.Inthosecaseswheretheserestrictionsarenotmet,othermethodscanbeused.Onlycasescomplyingwiththerestrictionsarecoveredinthisstandard.1.1Thispracticecoverstechniquesforcalculatingprecisionlimitswhenvaluesarecalculatedfromtwoothermethodshavingprecisionlimits.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:P04
【国际标准分类号】:93_080_20
【页数】:3P.;A4
【正文语种】:英语