Designation:D5124−96(Reapproved2018)StandardPracticeforTestingandUseofaRandomNumberGeneratorinLumberandWoodProductsSimulation1ThisstandardisissuedunderthefixeddesignationD5124;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticegivesaminimumtestingprocedureofcomputergenerationroutinesforthestandarduniformdistri-bution.Randomobservationsfromthestandarduniformdistribution,RU,rangefromzerotoonewitheveryvaluebetweenzeroandonehavinganequalchanceofoccurrence.1.2Thetestsdescribedinthispracticeonlysupportthebasicuseofrandomnumbergenerators,nottheiruseincomplexorextremelyprecisesimulations.1.3Simulationdetailsforthenormal,lognormal,2-parameterWeibulland3-parameterWeibullprobabilitydis-tributionsarepresented.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.Seespecificwarningstatementin5.5.3.1.5Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2E456TerminologyRelatingtoQualityandStatistics3.Terminology3.1Definitions:3.1.1period—thenumberofRUdeviatesthecomputergeneratesbeforethesequenceisrepeated.3.1.2seedvalue—anumberrequiredtostartthecomputergenerationofrandomnumbers.Dependinguponthecomputersystem,theseedvalueisinternallyprovidedoritmustbeuserspecified.Consultthedocumentationforthespecificrandomnumbergeneratorused.3.1.3serialcorrelation—thestatisticalcorrelationbetweenorderedob...
