Analysis of Quantitative Data

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1、Chapter3AnalysisofQuantitativeDataContents3.1Introduction.................................553.2WhatisDataAnalysis?............................563.3DataAnalysisTools.............................573.4DataAnalysisforTwoDataSets.......................603.

2、4.1TimeSeriesData—VisualAnalysis...................613.4.2Cross-SectionalData—VisualAnalysis.................653.4.3AnalysisofTimeSeriesData—DescriptiveStatistics...........673.4.4AnalysisofCross-SectionalData—DescriptiveStatistics..........693.5Analy

3、sisofTimeSeriesData—Forecasting/DataRelationshipTools.......723.5.1GraphicalAnalysis...........................733.5.2LinearRegression...........................773.5.3CovarianceandCorrelation.......................823.5.4OtherForecastingModels.......

4、................843.5.5Findings...............................853.6AnalysisofCross-SectionalData—Forecasting/DataRelationshipTools......853.6.1Findings...............................923.7Summary..................................93KeyTerms.............

5、.......................94ProblemsandExercises..............................943.1IntroductionInthischapterwecontinueourstudyofdataanalysis,particularlytheanalysisofquantitativedata.InChap.2weexploredtypesandusesofdata,andweperformeddataanalysisonquanti

6、tativedatawithgraphicaltechniques.Thischapterwilldelvemoredeeplyintothetopicofquantitativedataanalysis,providinguswithastrongfoundationandapreliminaryunderstandingoftheresultsofadatacollectioneffort.Somestatisticaltoolswillbeintroduced,butmorepowerful

7、toolswillfollowinlaterchapters.H.Guerrero,ExcelDataAnalysis,DOI10.1007/978-3-642-10835-8_3,55CSpringer-VerlagBerlinHeidelberg2010563AnalysisofQuantitativeData3.2WhatisDataAnalysis?IfyouperformaninternetsearchonthetermDataAnalysis,itwilltakeyearsforyo

8、utovisiteverysitethatisreturned,nottomentionencounteringamyriadofdif-ferenttypesofsites,eachclaimingthetitledataanalysis.Dataanalysismeansmanythingstomanypeople,butthegoalofdataanalysisisuniversal.Itistoansweroneveryimportantquestion—whatdoest