英语翻译
Tofurthercomplicatematters,onerarelyifeverknowshowlargethecompletedatasetwouldactuallybewiththeresultthatitisneverpossibletoknowwhatpercentageofthetotaldatasetisbeingbroughttobearinthesolutionoftheproblem.Therearecountlessexamplesincivilengineeringanddamsafetypracticewherejustoneextrapieceofdata(e.g.onemoreoraslightlydeeperdrillhole)wouldhaveledtoacompletelydifferentconclusion.Thus,thereisnowaytodemonstratethatsufficientdatahasbeencollectedtoformamathematicallyvalidapproximation(orknowndegreeofapproximation)ofthecompletedataset.Uneresuchcircumstances,thebestdefenceagainstafalsesenseofsecurityisthescepticalapproachoftheinquiringmind.
Asidefromtheproblemofthequantityofdata,thequalityofthedataisextremelyimprotantanditisgenerallyadvisabletoqualifythedatainsomewaypriortoacceptingitforuseintheanalysisprocess.Withoutsuchaprocessofqualifyingdata,additionaluncertaintiesandevenerrorswillbeintroducedintotheanalysis.Thereareestablishedprocedurestoqualifydatatoprotecttheintegrityoftheanalysisprocess.Theproceduresusedtoqualifythedataandinformationusedintheanalysiswillnormallybespecified.
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