社会统计学试卷

社会统计学试卷

安徽大学2008—2009学年第一学期《社会统计学》（双语教学）考试试卷（A卷）（时间120分钟）院/系专业姓名学号题号一二三四五六七总分得分一、问答题（每小题2分，共10分）得分1、Whatisthepopulation?2、Whatisthesample?3、WhatisDescriptiveStatistics?4、WhatisInferentialStatistics?《社会统计学》试卷第1页共34页\n二、填空题（每小空1分，共10分）得分1、Themostusedsamplingmethodsare___________,_________________,______________,________________.2、Thegraphsmostusedforcategoricaldatadescriptivestatisticsare_______,_________.3、Thegraphsmostusedforquantitativedatadescriptivestatisticsare_______,_________.4、TherearetwokindsofinferenceStatistics,andtheyare______________,___________.《社会统计学》试卷第2页共34页\n三、是非题（每小题1分，共2分）1、Onlycategoricaldatacanbeanalyzedby得分confidenceintervalmethod.2、Onlyrandomizedexperimentmethodcanbeusedtogetacasualrelationship.《社会统计学》试卷第3页共34页\n四、单选题（每小题1分，共80分）得分Chapter9Fillintheblank.The____________changeeverytimeanewsampleistaken.a.samplestatistics1b.parametersc.variablesd.distributionsWhatisthedefinitionofasamplingdistribution?a.Itisthedistributionofagivenvariableforapopulation.2b.Itisthedistributionofthepossiblevaluesofastatisticforrepeatedsamplesofthesamesizefromthepopulation.c.Itisthedistributionofthepossiblevaluesofaparameterforrepeatedsamplesofthesamesizefromthepopulation.d.Itisthedistributionofagivenparameterforapopulation.WhichofthefollowingisnotpartofthedefinitionfortheNormalCurveApproximationforSampleMeans?a.Thedistributionofpossiblevalueofisapproximatelynormalwhennumerousrandomsamplesofsizenaretaken.3b.Theobservationineachsamplemustallbemutuallyexclusive.c.Themeanofthesamplingdistributionofisequalto.d.Thestandarddeviationofthesamplingdistributionofisequalto.4Whichofthefollowingsamplesfromanormaldistributionandhasthelargestsamplesize?《社会统计学》试卷第4页共34页\na.GraphAb.GraphBc.GraphCd.GraphDThefollowingisagraphofthesamplingdistributionofforfiftyrandomsamplesofsize.Thehistogramofthesamplemeansisoverlaidwithanormalcurve.Thevariablebeingmeasuredisthenumberofdaysaweekthatpeoplewatchatleastonehouroftelevision.Whatwouldyouestimatethetruevalueofthepopulationparameter,,tobe?5a.Anaccurateapproximateforwouldbe5.b.Anaccurateapproximateforwouldbe5.15.《社会统计学》试卷第5页共34页\nc.Anaccurateapproximateforwouldbe5.55.d.Thepopulationparameterisunknownandcannotbeapproximated.Whichofthefollowingmeasureofcentraltendencywouldbeappropriateforasetofdatathatarestronglyskewed?a.Mean6b.Standarddeviationc.Mediand.ProportionWhichofthefollowingisnottrue?Iftheappropriateconditionsaremet,thestandardizedscoreforsamplemeanswillhave,approximately,aa.standardnormaldistribution.Iftheappropriateconditionsaremet,thestandardizedscoreforasamplewillhave,approximately,astandardb.normaldistribution.7Iftheappropriateconditionsaremet,thestandardizedscoreforsampleproportionswillhave,c.approximately,astandardnormaldistribution.Iftheappropriateconditionsaremet,thestandardizedscoreforsamplemeanswillhave,approximately,ad.standardnormaldistribution.8Whatisthedistributionofthestandardizedstatistic?《社会统计学》试卷第6页共34页\na.Ithasastandardnormaldistributionwith.b.Ithasat-distributionwith.c.Ithasastandardnormaldistributionwithmean0andstandarddeviation1.d.Ithasat-distributionwithmean0andstandarddeviation1.Fillintheblank.Aconfidenceintervalisanintervalofvaluesthattheresearcherisfairlysurecoversthe___________forthepopulation.a.rangeofvalues9b.statisticc.parameterd.hypothesisStatisticalsignificanceisequivalenttowhichofthefollowing?a.Statisticalsignificanceisequivalenttoacceptingtheideathatchancealonecanexplaintheobservedresultsofthestudy.10b.Statisticalsignificanceisequivalenttorejectingtheideathatchancealonecanexplaintheobservedresultsofthestudy.c.Statisticalsignificanceisequivalenttoaconfidenceinterval.d.Statisticalsignificanceisequivalenttosayingthesamplestatisticisequaltothepopulationparameter.Chapter10得分Fillintheblank.The___________isanestimateofp.1a.parameterb.statistic《社会统计学》试卷第7页共34页\nc.sampled.meanAsurveywasconductedtodeterminetheproportionofstudentsatacollegewhoexercisedregularly.A95%confidenceintervalwascalculatedforthesampledatacollected.Whatcanbeconcludedabouttheconfidenceinterval?a.Theconfidenceintervalwillcontainthetruepopulationproportionwithprobabilityof0.95.2b.Theconfidenceintervalhasa95%chanceofcontainingthesampleproportion.Theprocedureusedtodeterminetheintervalwillcomputeanintervalthatcontainsthetruepopulationc.proportion99%ofthetime.Theprocedureusedtodeterminetheintervalwillcomputeanintervalthatcontainsthetruepopulationd.proportion95%ofthetime.Fillintheblank.A_____________isafractionordecimalfractionthathasavaluebetween0and1.a.mean3b.samplesizec.unitd.proportionWhichofthefollowingfactorsdeterminethemarginorerrorforastudy?a.Thesampleproportion,.4b.Thesamplesize,n.c.Theconfidencelevelandmultiplierof2.d.Alloftheabovefactorsdeterminethemarginoferror.《社会统计学》试卷第8页共34页\nUsingtheNormalCurveApproximationRuleforSampleProportions,ifthesamplesizeissufficientlylarge,thedistributionofpossiblevalueofisapproximatelyanormalcurve.Whatarethemeanandstandarddeviationforthisnormaldistribution?a.Themeanisandthestandarddeviationis.5b.Themeanisandthestandarddeviationis.c.Themeanisandthestandarddeviationis.d.Themeanisandthestandarddeviationis.Supposeasurveyisconductedtodeterminetheproportionofindividualsinaparticularcitywhocommutetenormoremilestotheirplaceofworkdaily.Whichofthefollowingisa90%confidenceintervalifthesurveyfoundthat65of100peoplecommutetenormoremilestoworkdaily?a.(0.527,0.773)6b.(0.557,0.743)c.(0.572,0.728)d.(0.539,0.761)Whichofthefollowingstatementsregardingsamplesizeistrue?a.Asthesamplesizeincreasesthemarginoferrordecreases.7b.Asthesamplesizeincreasesthemarginoferroralsoincreases.c.Asthesamplesizedecreasesthemarginoferroralsodecreases.d.Thesamplesizeandmarginoferrorarenotrelated.Whencanitbereasonablyconcludedthattwopopulationproportionsaredifferent?Twopopulationproportionscanbeconcludedasdifferentwhenthesampleproportionsforeachpopulationaredifferent,in8a.otherwords.b.Twopopulationproportionscanbeconcludedasdifferentwhentheirstandarderrorsarenotthesame,inotherwords《社会统计学》试卷第9页共34页\n.Twopopulationproportionscanbeconcludedasdifferentwhentheconfidenceintervalsforeachoftheproportionsoverlapc.eachother.Twopopulationproportionscanbeconcludedasdifferentwhentheconfidenceintervalsforeachoftheproportionsdonotd.overlapeachother.Whichofthefollowingisthecorrectformulaforaconfidenceintervalforpforanyconfidenceinterval?a.9b.c.d.Whatwouldoccurtotheconfidenceintervaliftheconfidencelevelwerechangedfrom90%to80%?a.Theconfidenceintervalwoulddecreaseinsize.10b.Theconfidenceintervalwouldincreaseinsize.c.Theconfidenceintervalwouldstaythesame.d.Itdependsonthestandarderrorofthesample.Chapter11得分Whatwouldbethenullhypothesisforthequestion,"Doelementarystudentslikeschoolmorethanmiddleschoolstudents?"a.Ho:Elementaryschoolstudentslikeschoolmorethanmiddleschoolstudents.1b.Ha:Elementaryschoolstudentslikeschoolmorethanmiddleschoolstudents.c.Ho:Elementaryschoolstudentsdonotlikeschoolmorethanmiddleschoolstudents.《社会统计学》试卷第10页共34页\nd.Ha:Elementaryschoolstudentsdonotlikeschoolmorethanmiddleschoolstudents.rdIfanalternativehypothesisstatesthattheresearcherisinterestedinwhetherthereisanydifferenceintheheightsofboysandgirlsin3grade,whattypeofhypothesistestwouldbeperformed?a.one-sidedhypothesistest2b.two-sidedhypothesistestc.bothone-sidedandtwo-sidedhypothesistestd.three-sidedhypothesistestWhatdonullandalternativehypothesisstatementsreferto?a.Samples3b.Populationsc.bothsamplesandpopulationsd.StatisticsWhichofthefollowingisthecorrectdefinitionforap-value?Thep-valueiscomputedbyassumingthenullhypothesisistrueandthendeterminingtheprobabilityofobservingatesta.statisticasextremeormoreextremethantheoneobservedinthedirectionofthealternativehypothesis.Thep-valueiscomputedbyassumingthealternativehypothesisistrueandthendeterminingtheprobabilityofobservingatest4b.statisticasextremeormoreextremethantheoneobservedinthedirectionofthenullhypothesis.Thep-valueiscomputedbyassumingthenullhypothesisisfalseandthendeterminingtheprobabilityofobservingatestc.statisticasextremeormoreextremethantheoneobservedinthedirectionofthealternativehypothesis.Thep-valueiscomputedbyassumingthenullhypothesisistrueandthendeterminingtheprobabilityofobservingameanasd.extremeormoreextremethantheoneobservedinthedirectionofthealternativehypothesis.Supposearesearcherconductedatestoftwotypesofwheatandfoundtheforthefollowinghypothesistest.5Ho:TheyieldofcropAisnodifferentthantheyieldofcropB.Ha:TheyieldofcropAislargerthantheyieldofcropB.《社会统计学》试卷第11页共34页\nUsingan,whatwouldbeyourconclusionregardingthehypothesestested?WewouldfailtorejectthenullhypothesisandconcludethereisnotenoughevidencetoconcludethattheyieldofcropAisa.differentthancropB.WewouldrejectthenullhypothesisandconcludethereissufficientevidencetoconcludethattheyieldofcropAislargerthanb.theyieldofcropB.WewouldrejectthenullhypothesisandconcludethereissufficientevidencetoconcludethattheyieldofcropAissmallerthanc.theyieldofcropB.d.Thereisnotenoughinformationgiventomakeaconclusionregardingthishypothesistest.Whichofthefollowingisnottruewithregardstohypothesistesting?a.BothHoandHaarestatedintermsofthestatisticofinterest.6b.Thenullhypothesisisastatementofnorelationshipordifference.c.Thealternativehypothesisstatesthechangethatisbelievedtohaveoccurred.d.Thealternativehypothesisspecifieswhetheritisaoneortwo-sidedtest.Supposeastudywasconductedtodetermineifmorethanhalfofhighschoolmalessmokeatleastonepackofcigarettesaweek.Asampleof200malesfoundthat75ofthemsmokeatleastonepackaweek.Assumeallnecessaryconditionsaremet.Whatisthez-statisticforthesignificancetestofthehypothesesstatedabove?a.7b.c.d.Foranalternativehypothesistestof,whenwillthep-valuebegreaterthanorequalto0.50?8a.Whenthesampleproportionisgreaterthanorequaltopo.《社会统计学》试卷第12页共34页\nb.Whenthesampleproportionislessthanpo.c.Whenthesampleproportionisequaltopo.d.WhenthepopulationproportionisgreaterthanorequaltopoWhatdoestheprobabilityofatype2errordependon?a.samplesize9b.trueparametervaluec.levelofsignificanced.Alloftheabove.Whatistheappropriaterejectionregionforateststatisticzinatwo-tailedtestwith?a.Therejectionregionconsistsofvaluesofz<–2.58.10b.Therejectionregionconsistsofvaluesofz>2.58.c.Therejectionregionconsistsofvaluesofz<–2.58orz>2.58.d.Therejectionregionconsistsofvalueofz<–2.33orz>2.33.Chapter12得分Whatistheparameterfortheresearchquestion,"Howmuchdifferenceisthereintheaverageweightgainduringafemales(f)freshmanyearofcollegeandamales(m)averageweightgainduringhisfreshmanyearofcollege?"a.1b.c.《社会统计学》试卷第13页共34页\nd.Whichofthefollowingisthegeneraldefinitionofstandarderror?a.Thestandarderrorofasamplestatisticisthestandarddeviationofthesamplingdistributionofthestatistic.Thestandarderrorofasamplestatisticmeasurestheaveragedistancebetweenthestatisticandthepopulationparameter2b.overallpossiblerandomsamplesofagivensizethancanbetakenfromthepopulation.c.Thestandarderroristhestandarddeviationofthepopulationbeingmeasured.d.Bothanswersa)andb).Howisthestandarderrorofthedifferencebetweentwosamplemeanscalculated?a.3b.c.d.Supposeanapproximate95%confidenceintervalforthedifferenceintheaveragenumberofmilesamaletrackmemberrunsaweekandtheaveragenumberofmilesafemaletrackmemberrunsaweekis(–1.5,3.2).Canweconcludethattheaveragenumberofmilesamaleandfemaletrackmemberrunsaweekisapproximatelyequal?Whyorwhynot?Sincethemidpointoftheintervalisgreaterthanzero,theevidencesupportstheconclusionthatthereisadifferencebetweena.theaveragemilesamaleandfemaletrackmemberrunaweek.4Sincezeroisincludedintheinterval,theevidencesupportstheconclusionthattheaveragenumberofmilesisapproximatelyb.equalforamaleandfemaletrackmember.Sincezeroisincludedintheinterval,theevidencesupportstheconclusionthatthereisadifferencebetweentheaveragec.milesamaleandfemaletrackmemberrunaweek.d.Thisisnotavalidconfidenceintervalsinceitincludesnegativenumbersandthereforenoconclusioncanbemade.5WhenshouldaStudent'st-distributionbeusedwhencalculatingconfidenceintervals?《社会统计学》试卷第14页共34页\na.Itshouldbeusedwhenthepopulationstandarddeviationisknown.b.Itshouldbeusedwhenthesamplemeanisknown.c.Itshouldbeusedwhenthepopulationmeanisknown.d.Itshouldbeusedwhenthesamplestandarddeviationisusedinplaceofthepopulationstandarddeviation.Whichofthefollowingisthegeneralformulaforaconfidenceintervalforapopulationmean?Verifythedegreesoffreedom.a.6b.c.d.Whatisaconservativeestimateforthedegreesoffreedomoft*whencomputingaconfidenceintervalforthedifferencebetweentwomeans?a.7b.c.d.Ifitcanbeassumedthatthevariancesofthetwopopulationsbeingstudiedarethesame,whichofthefollowingisfalse?8a.Aconfidenceintervalforhastheform.b.Thevaluefort*isfoundusingat-distributionwith.《社会统计学》试卷第15页共34页\nc.Thepooledvarianceisaweightedaverageoftheindividualsamplevariances.d.Ifthesamplesizesarethesamethentheweightsareequalandthepooledvarianceis.Whichofthefollowingrepresentsthecriticalvaluethatshouldbeusedwhencomputingaconfidenceintervalforthedifferencebetweentwopopulationproportions?a.9b.c.d.Whichofthefollowingisnottrueforatwo-sampleproblemofcomparingmeans?a.Thetwosamplesareconsideredtobefromthesamepopulation.10b.Statisticalinferencecomparestheresponsesofthetwogroups.c.Thesamplesareindependentandrandomlychosen.d.Whenbothpopulationstandarddeviationsareunknownandthedistributionsarenormal,thet-distributionisused.Chapter13得分Whatisthegeneralformforastandardizedteststatistic?a.1b.c.d.《社会统计学》试卷第16页共34页\nWhichofthefollowingis/arenecessaryconditionsforthedatawhenconductingaone-samplehypothesistest?a.Thepopulationofthemeasurementsmustbeapproximatelynormalandarandomsampleofanysizeismeasured.Ifthepopulationofthemeasurementsisnotapproximatelynormalthesamplemustbealargerandomsample(typically2b.greaterthan30).c.Thepopulationofthemeasurementsmustbeapproximatelynormalandarandomsamplelargerthan30mustbemeasured.d.Eitheroftheconditionsinanswer(a)andanswer(b)mustbemet.Supposethetestscoresona100-pointtestwererecordedforthefollowing6students.Scoresforthesixstudentswere:80,75,90,60,35,and88.Iftheinstructorisinterestedinwhetherornotthescoresforthisparticulartypeoftestaverage75forallpeoplewhotakethistest,whatwouldarethenullandalternativehypotheses?a.3b.c.d.Whichofthefollowingrepresentstheteststatisticforapairedt-test?a.4b.c.《社会统计学》试卷第17页共34页\nd.WhatarethehypothesesbeingtestedandtheappropriateconclusionfromtheMINITABresultsbelow?Note:Thevariablebeingstudiedisheight.Use=0.10.TwosampleTforGroup1vsGroup25Thehypothesesareandtheconclusionwouldbethatthereisastatisticallysignificanta.differencebetweentheheightsofGroup1andGroup2.Thehypothesesareandtheconclusionwouldbethatthereisnotab.statisticallysignificantdifferencebetweentheheightsofGroup1andGroup2.Thehypothesesareandtheconclusionwouldbethatthereisnotastatisticallyc.significantdifferencebetweentheheightsofGroup1andGroup2.d.Thehypothesescannotbedeterminedfromtheinformationgiven.Giventhe95%confidenceinterval(3,12),canyoumakeaconclusionregardingthenullhypothesisthattheamountofmailapersonreceivesonaverageperdayis2?(i.e.)Yes,wecanrejectthenullhypothesisatthelevelandconcludethattheaveragenumberofpiecesofmaildiffersa.from2.6No,wecannotrejectthenullhypothesisatthelevelandthereforeconcludethattheaveragenumberofpiecesofb.maildoesnotdifferfrom2.Yes,wecanrejectthenullhypothesisatthelevelandconcludethattheaveragenumberofpiecesofmaildiffersc.from2.No,wecannotrejectthenullhypothesisatthelevelandthereforeconcludethattheaveragenumberofpiecesofd.maildoesnotdifferfrom2.Whichofthefollowingparametersisusedforcategoricalvariables?7a.b.《社会统计学》试卷第18页共34页\nc.d.Bothanswera)andb).Whichofthefollowingfactorsaffecttheprobabilityofmakingatype2error?a.Thelevelofsignificance.8b.Theactualvalueofthepopulationparametereventhoughthisisoftenunknown.c.Thesamplesize.d.Alloftheabove.Whendoesthepowerofatestincrease?a.Thepowerincreaseswhenthedifferencebetweenthetruepopulationvalueandthenullhypothesisvaluedecreases.9b.Thepowerincreaseswhenthesamplesizeincreases.c.Thepowerincreaseswhenthesamplesizedecreases.d.Bothanswersa)andc).Whatistheeffectsizeforastudywhereand?Istheeffectsizeclosesttoasmall,mediumorlargeeffect?a.Theeffectsizeis0.056andwouldbeclosesttoasmalleffect.10b.Theeffectsizeis0.39andwouldbeclosesttoamediumeffect.c.Theeffectsizeis19.8andwouldbeclosesttoalargeeffect.d.Thereisnotenoughinformationgiventocomputetheeffectsize.Chapter14《社会统计学》试卷第19页共34页\n得分Fillintheblank.Theleast-squaresregressionlinehasthe__________sumofsquareddeviationsbetweenthesamplevaluesofyandthecorrespondingvaluesofforallpossiblelines.a.smallest1b.largestc.averaged.maximumWhatistheresidualforatestscoreof75iftheregressionlinetopredictastudent'sfinalscoreintheclassis?a.81.252b.6.25c.75d.–6.25Whichofthefollowingisnotanassumptionaboutthedeviationsfromtheregressionlineinthepopulation?a.Thevaluesofareindependent.3b.Thevaluesofhaveameanof1.c.Thevaluesofhaveacommonvarianceequalto.d.Thevaluesofhaveanormalprobabilitydistribution.4Inastudytodetermineiftheinterestrateforcarloanspredictsthenumberofcarssold,theresearcherfound.Whatcanbeconcludedfromthisinformation?《社会统计学》试卷第20页共34页\na.Theinterestrateexplains0.68%ofthevariabilityinthenumberofcarssold.b.Thenumberofcarssoldexplains0.68%ofthevariabilityintheinterestrate.c.Theinterestrateexplains68%ofthevariabilityinthenumberofcarssold.d.Thenumberofcarssoldexplains68%ofthevariabilityintheinterestrate.2UsingtheMINITABoutputbelow,whataretheregressionlineandvalueforrforthisstudyofweightandage?5a.Theregressionlineisand.b.Theregressionlineisand.c.Theregressionlineisand.d.Theregressionlineisand.Howmanydegreeoffreedomdoesthemultipliert*havewhencomputingaconfidenceintervalfor?a.Ithasat-distributionwithonedegreeoffreedom.6b.Ithasat-distributionwithn–1degreesoffreedom.c.Ithasat-distributionwithn–2degreesoffreedom.d.Ithasat-distributionwithn–3degreesoffreedom.《社会统计学》试卷第21页共34页\nWhichofthefollowingisnottrue?Thereisadirectlinkbetweenthecorrelationvalueandthet-statisticwhentestingwhethertheslopeofaregressionlineisa.zero.7b.Increasingthesamplesizenforanyfixedvalueofrwillincreasethesizeofthet-statistic.c.Thesmallerthevalueofthet-statistic,thestrongertheevidenceagainstthenullhypothesis.d.Alloftheabove.Whichofthefollowingisnottrueforapredictioninterval?a.Thepredictionintervalestimatesthecentral95%ofthevaluesofyformembersofthepopulationwithaspecifiedvalueofx.8b.ApredictionintervalestimatesapopulationparameterArandomlyselectedindividualfromthepopulationwithaspecifiedvalueofxfallsintothecorresponding95%predictionc.intervalwithprobability0.95.d.Apredictionintervalcanbecreatedforanycentralpercentageofthepopulationataspecificvalueofx.Whichofthefollowingisaconditionforlinearregression?a.Thereshouldnotbeanyextremeoutliersthatinfluencetheresults.9b.Thevaluesofyshouldbesimilarlyspreadoutaroundallvaluesofx.c.Observationsinthesamplemustbeindependentofeachother.d.Alloftheabove.10FromthefollowingMINITABgraphbelow,whatcanyouconcludeaboutthelinearregressionmodel?《社会统计学》试卷第22页共34页\na.Thedatadonotappeartofollowastraightline;thereforealinearregressionmodelisnotappropriate.b.Thereappeartobeseveraloutliers,whichwouldmakealinearregressionunreliable.Sincetheplotofresidualsisrandomlyscatteraroundahorizontallineat,itappearsthattheassumptionsregardingc.thedeviationswithinthepopulationsaremet.d.Thedataappeartohaveacurvilinearrelationshipratherthanalinearrelationship.Chapter15得分Whatisthealternativehypothesisfortestingtwocategoricalvariablesthatformatwo-waytable?a.Ha:Thetwovariablesarerelated.1b.Ha:Thetwovariablesarenotrelated.c.Ha:Therowpercentsarenotequal.d.Ha:Thereisnodifferenceinthedistributions.Whatdoesthechi-squarestatisticmeasureforatwo-waytableanalysis?2a.Itmeasuresthedifferencebetweenthemeansofthetwocolumns.《社会统计学》试卷第23页共34页\nb.Itmeasuresthedifferencebetweentheobservedcountsintherowsandtheobservedcountsinthecolumns.c.Itmeasuresthedifferencebetweentheobservedcountsandthecorrespondingexpectedcountsforallcells.d.Itmeasuresthedifferencebetweentheexpectedcountsinthecolumnsandtheexpectedcountsinthecolumns.Howmanydegreesoffreedomdoesthechi-squarestatistichaveforatwo-waytable?a.33b.4c.1d.2Whatshapedoesthechi-squareprobabilitydistributionhave?a.Itisbell-shapedandcenteredat1.4b.Itisskewedrightwithaminimumvalueofzero.c.Itisskewedleftandtheprecisecharacteristicsoftheshapearedeterminedbytheparametercalleddegreesoffreedom.d.Itisbell-shapedandcenteredatzero.Whatisthechi-squareteststatisticanddegreesoffreedomforthetablebelow?Hint:Usetheshortcutformula.5a.b.《社会统计学》试卷第24页共34页\nc.d.Whichofthefollowingiscommonforbothachi-squaretestfortablesandachi-squaregoodnessoffittest?a.ThenullhypothesisisHo:Theprobabilitiesforthekcategoriesofacategoricalvariablearegivenbyp1,p2,...pk.b.Theteststatisticforbothhasonedegreeoffreedom.6c.Theteststatisticis.d.Theprobabilitiesspecifiedinthenullhypothesismustsumto1.Wouldtheresultwithbestatisticallysignificantatthelevelofsignificance?Givethep-valuetosupportyouranswer.a.Theresultswouldnotbestatisticallysignificantsincethep-valueis0.9596.7b.Theresultswouldnotbestatisticallysignificantatthelevelofsignificancesincethep-valueis0.0404.Theresultswouldbestatisticallysignificantatthelevelofsignificancesincethep-valueisapproximatelyzeroc.(p-value<0.0001).d.Theresultswouldbestatisticallysignificantatthelevelofsignificancesincethep-valueis0.0404.Whatistheexpectedcellcountforp2forthenullhypothesisforasampleofsize1000?a.8b.c.《社会统计学》试卷第25页共34页\nd.Whichofthefollowingis/aretruewhenanalyzingantable?a.Theteststatisticwillneverbezero.9b.Thedegreesoffreedomfortheteststatisticare(r–1)(c–1).c.Theteststatistichasachi-squaredistribution.d.Alloftheabovearetrue.Whichtestshouldbeusedtoanalyzethehypotheses?a.achi-squaretest10b.at-testc.az-testd.Anyoftheabovetestscouldbeusedtoanalyzethesehypotheses.Chapter16得分Whatisthenullhypothesisforananalysisofvariancetest?a.Ho:Atleasttwoofthemeansareequal.1b.Ho:Themeansarenotallequal.c.Ho:Allmeanshavethesamevalue.d.Ho:Alltheproportionsareequal.《社会统计学》试卷第26页共34页\nFillintheblank.ThevalueoftheF-statisticinananalysisofvariance___________asthevariationamongthesamplemeansgetslarger.a.getssmaller2b.staysthesamec.getslargerd.approachesachi-squarestatisticWhichofthefollowingisnotanassumptionornecessaryconditionfortheF-test?a.Thedifferentpopulationsmayhavedifferentmeans.3b.Thesamplesareindependentrandomsamples.c.Thedistributionoftheresponsevariableisanormalcurvewithineachpopulation.d.Thepopulationsmayhavedifferentstandarddeviations,.WhichofthefollowingisnottrueforanF-distribution?a.AllF-distributionshaveaminimumvalueofzero.4b.AllF-distributionsareskewed.c.AnF-distributionischaracterizedbytwostatisticscalleddegreesoffreedom.d.Thenumeratordegreesoffreedomarewherekisthenumberofcategories.Supposethreedifferenttypesofmedicationweretestedforreducinganindividual'scholesterollevel.Iftenindividualsarerandomlyassignedtoeachofthethreegroups,whatcanbeconcludedfromtheMINITABoutputshownbelow?5《社会统计学》试卷第27页共34页\na.Themeancholesterollevelsforthethreegroupsareequalat.b.Itcanbeconcludedthatatleastoneofthemeansdiffersfromtheothersatthelevel.c.Itcanbeconcludedthatatleastoneofthemeansdiffersfromtheothersatthelevel.d.Itcanbeconcludedthatthemeanofgroup1issignificantlydifferentfromthemeansofgroups2and3.Whichofthefollowingisanestimateofthepopulationstandarddeviation,?a.SSE6b.MSEc.SSTd.Whichofthefollowingexplainstherelationshipbetweenthesourcesofvariationpresentinananalysisofvariance?a.Totalvariation=Variationbetweengroups–Variationwithingroups7b.Totalvariation=Variationbetweengroups=Variationwithingroupsc.TotalVariation=Variationbetweengroups+Variationwithingroupsd.TotalVariation=Variationbetweengroups/VariationwithingroupsIftheobserveddataareskewedorwhenextremeoutliersarepresent,whichofthefollowingshouldbeusedtoanalyzethedata?a.Student'st-test8b.StandardNormalz-testc.Kruskal-Wallistest《社会统计学》试卷第28页共34页\nd.AnalysisofVarianceTheMINITABoutputbelowshowsatwo-wayanalysisofvariancefortheheightsofhighschoolstudentsbasedontheirgradelevelandgender.Howwouldtheinteractiontermbeinterpreted?9a.Theinteractionterm,whichisnotsignificant,tellsustheeffectonheightofgenderdoesnotdependongradelevel.b.Theinteractionterm,whichissignificant,tellsustheeffectonheightofgradedependsongender.c.Theinteractionterm,whichissignificant,tellsusthatgenderdoesaffecttheheightofanindividual.d.Theinteractionterm,whichisnotsignificant,tellsusthatgradeleveldoesnotaffecttheheightofaperson.Whatisthep-valueandconclusionforanF-testofthenullhypothesisofequalpopulationmeansiftheF-statistic=5.32with2and42degreesoffreedomusing?a.Thep-valueis0.9913andwewouldfailtorejectthenullhypothesisofequalpopulationmeans.10b.Thep-valueis0.9913andwewouldrejectthenullhypothesisofequalpopulationmeans.c.Thep-valueis0.0087andwewouldfailtorejectthenullhypothesisofequalpopulationmeans.d.Thep-valueis0.0087andwerejectthenullhypothesisofequalpopulationmeans.《社会统计学》试卷第29页共34页\n安徽大学2007—2008学年第一学期《社会统计学》考试试题（A）参考答案及评分标准一、问答题：1、theentirecollectionofunitsaboutwhichwewouldlikeinformationortheentirecollectionofmeasurementswewouldhaveifwecouldmeasurethewholepopulation2、thecollectionofunitswewillactuallymeasureorthecollectionofmeasurementswewillactuallyobtain3、usingnumericalandgraphicalsummariestocharacterizeadataset.4、usingsampleinformationtomakeconclusionsaboutabroaderrangeofindividualsthanjustthoseobserved.二、填空题1、Simplerandomsampling,clustersampling,stratifiedsampling,andsystemsampling.2、Pie,bar3、Dotplot,histogram4、Confidenceinterval,hypothesistesting三、是非题1、no2、yes四、单选题Chapter91a2b3b4a5a6c7d8b9c10bChapter10《社会统计学》试卷第30页共34页\n1b2d3d4d5c6c7a8d9c10aChapter111c2b3b4a5b6a7b8a9d10cChapter12《社会统计学》试卷第31页共34页\n1d2d3c4b5d6b7c8d9a10aChapter131b2d3a4a5c6c7c8d9b10bChapter14《社会统计学》试卷第32页共34页\n1a2d3b4c5a6c7c8b9d10cChapter151a2c3c4b5d6c7b8a9d10cChapter16《社会统计学》试卷第33页共34页\n1c2c3d4c5b6d7c8c9a10d《社会统计学》试卷第34页共34页