using econometrics： a practical guide (4th edition) 2008

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1、UsingEconometrics：APracticalGuide(4thEdition)2008PARTTHEBASICREGRESSIONMODEL1CHAPTERAnOverviewofRegressionAnalysis1.1WhatIsEconometrics?1.2WhatIsRegressionAnalysis?1.3TheEstimatedRegressionEquation1.4ASimpleExampleofRegressionAnalysis1.5UsingRegressiontoExplainHousingPrices1.6SummaryandExercises1.1

2、WhatIsEconometrics?;Econometricsistoomathematical;it'sthereasonmybestfriendisn'tmajoringineconomics.;;Therearetwothingsyoudon'twanttoseeinthemaking—sausageandeconometricresearch.;1;Econometricsmaybedefinedasthequantitativeanalysisofactualeco-nomicphenomena.;2;It'smyexperiencetha

3、t'economy-tricks'isusuallynothingmorethanajustificationofwhattheauthorbelievedbeforetheresearchwasbegun.;Obviously,econometricsmeansdifferentthingstodifferentpeople.Tobegin-ningstudents,itmayseemasifeconometricsisanoverlycomplexobstacletoanotherwiseusefuleducation.Toskepticalobservers,eco

4、nometricresultsshouldbetrustedonlywhenthestepsthatproducedthoseresultsarecom-pletelyknown.Toprofessionalsinthefield,econometricsisafascinatingset1.AttributedtoEdwardE.Learner.2,PaulA.Samuelson,T.C.Koopmans,andJ.R.Stone,;ReportoftheEvaluativeCommitteeforEconometrica,;Econometrica,1954,p.141.34PARTI?

5、?THEBASICREGRESSIONMODELoftechniquesthatallowsthemeasurementandanalysisofeconomicphe-nomenaandthepredictionoffutureeconomictrends.You'reprobablythinkingthatsuchdiversepointsof6><#00aa00'>viewsoundlikethestatementsofblindpeopletryingtodescribeanelephantbasedonwhattheyhappentobetouching,andyou&#

6、039;repartiallyright.Econometricshasbothaformaldefinitionandalargercontext.Althoughyoucaneasilymemorizetheformaldefinition,you'llgetthecompletepictureonlybyunderstandingthemanyusesofandalternativeapproachestoeconometrics.Thatsaid,weneedaformaldefinition.Econometrics,literally;economicmeasureme

7、nt,;isthequantitativemeasurementandanalysisofactualeco-nomicandbusinessphenomena.Itattemptstoquantifyeconomicrealityandbridgethegapbetweentheabstractworldofeconomictheoryandtherealworldofhumanactivity.Toman