社会统计学试卷 31页

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（B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8分）得分1、Whatisthepopulation?2、Whatisthesample?3、WhatisDescriptiveStatistics?4、WhatisInferentialStatistics?《社会统计学》试卷第1页共31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31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31页\n四、单选题（每小题1分，共80分）得分Chapter9Whichofthefollowingisaparameter?a.1b.pc.sd.Suppose56%ofallUnitedStatescitizensareinfavoroftermlimits.Ifarandomsampleof1000citizensintheUnitedStatesweresurveyed,howmanypeoplewouldbeexpectedtofavortermlimits?a.562b.44c.560d.Thereisnotenoughinformationgiventoanswerthequestion.ForwhichofthefollowingdoestheRuleforSampleMeansapply?a.Itappliesevenifthesampleisnotrandom.3b.Itappliesforsmallsampleswhentheoriginalpopulationisnotbell-shaped.c.Itappliesifthepopulationofthemeasurementofinterestisbell-shapedandarandomsampleofanysizeismeasured.d.Itappliestoalloftheabovesituations.Ifthesamplesizeisincreased,whatwillhappentothestandarddeviationofthedistributionofthesamplemean?4a.Thestandarddeviationwillremainthesame.《社会统计学》试卷第4页共31页\nb.Thestandarddeviationwilldecrease.c.Thestandarddeviationwillincrease.d.Itdependsonthedatabeingstudied.WhatdoestheLawofLargeNumberstellus?a.Ittellsushowmuchvariabilitytoexpectinpossiblemeansfordifferentsamplesizes.Ittellsusthatifthepopulationdistributionisnormallydistributedthanthesamplingdistributionofthemeanwillalsobenormally5b.distributed.c.Ittellsusthatforanyspecificpopulation,thelargerthesamplesize,thecloserwillbetoanaccuraterepresentationof.d.Ittellsusthatforanyspecificpopulation,thelargerthesamplesize,thecloserswillbetoanaccuraterepresentationof.WhichofthefollowingisthecorrectdefinitionfortheCentralLimitTheorem?Ifnissufficientlylarge,thesamplemeansofrandomsamplesfromapopulationwithmeanandfinitestandarddeviationarea.approximatelynormallydistributedwithmeanandstandarddeviation.Ifnissufficientlysmall,thesamplemeansofrandomsamplesfromapopulationwithmeanandfinitestandarddeviationare6b.approximatelynormallydistributedwithmeanandstandarddeviation.Ifnissufficientlylarge,thesamplemeansofrandomsamplesfromapopulationwithmeanandfinitestandarddeviationarec.approximatelynormallydistributedwithmeanandstandarddeviation.Ifnissufficientlylarge,thesamplemeansofrandomsamplesfromapopulationwithmeanandfinitestandarddeviationared.approximatelynormallydistributedwithmeanandstandarddeviation.Ifasetofdatafromanormalpopulationwithandstandarddeviationisconvertedusingtheformula,whatwillbethedistributionofthetransformeddata?7a.Thedistributionofthezvalueswillbenormalwithandstandarddeviation.b.Thedistributionofthezvalueswillbeuniformwithandstandarddeviation《社会统计学》试卷第5页共31页\nc.Thedistributionofthezvalueswilldependonthesamplesize,n.d.Thedistributionofthezvalueswillbenormalwithandstandarddeviation.WhichofthefollowingisnottruefortheStudent'st-distribution?a.Thet-distributionisappropriatetousewhenthesamplesizeissmallandsdoesnotprovideanaccurateapproximationfor.8b.At-distributionhasabell-shape.c.Thet-distributioniscenteredat1andismorespreadoutthanthestandardnormaldistribution.d.Thet-distributionhasmoreprobabilityintheextremeareasthanthestandardnormalcurve.Arandomsampleof15womenwithandweredrawnfromapopulationwithameanheightof68inches.Whatarethet-valueanddegreesoffreedomforthisstudy?a.Thet-valueis1.49andthedegreesoffreedomare15.9b.Thet-valueis–1.49andthedegreesoffreedomare14.c.Thet-valueis–0.38andthedegreesoffreedomare14.d.Thet-valuecannotbecalculatedsinceisunknown.Whatisthepurposeofahypothesistest?Hypothesistestingusessampledatatoattempttorejectthehypothesisthatthereisnostatisticaldifferencebetweenthedataa.andthehypothesizedvalueofthepopulationparameter.Hypothesistestingusespopulationdatatoattempttorejectthehypothesisthatthereisastatisticaldifferencebetweenthedata10b.andthehypothesizedvalueofthepopulationparameter.c.Hypothesistestingcreatesanintervalthatsupposedlycoversthetruevalueorparameter.d.Hypothesistestingisastatisticalmeasurement.《社会统计学》试卷第6页共31页\nChapter10得分Whichofthefollowingisthefractionofthesamplethathasacertaintraitorcharacteristic?a.,thepopulationproportion1b.,thesampleproportionc.thesampled.aunitWhatcanbeconcludedaboutthedifferencebetweenthesampleproportionandthepopulationproportionwithrespecttothemarginoferrortypicallyprovidedinsurveyresultsreportedinthemedia?Thedifferencebetweenthesampleproportionandthepopulationproportionismorethanthemarginoferrorabout95%ofthea.time.Thedifferencebetweenthesampleproportionandthepopulationproportionismorethanthemarginoferrorabout5%ofthe2b.time.Thedifferencebetweenthesampleproportionandthepopulationproportionislessthanthemarginoferrorabout95%ofthec.time.d.Bothanswers(b)and(c)above.Whichofthefollowingisthegeneralformforanapproximate95%confidenceintervalforapopulationproportionifthemarginoferrorisknown?a.marginoferror3b.marginoferrorc.*(marginoferror)d.*(marginoferror)4Whenisitmostappropriatetousetheapproximationforthemarginoferrorof?《社会统计学》试卷第7页共31页\na.Itshouldbeusedwhenpiscloseto0.b.Itshouldbeusedwhenpiscloseto0.50.c.Itshouldbeusedwhenpiscloseto0.75.d.Itshouldbeusedwhenpiscloseto1.Supposeastudywasconductedtodeterminewhatproportionofthearmedforcemembersarewomen.Asampleof200membersofthearmedforcesfoundthat35oftheindividualssurveyedwerefemale.Whatisthemarginoferrorforthisstudy?a.Marginoferrorequals0.027.5b.Marginoferrorequals0.38.c.Marginoferrorequals0.054.d.Themarginoferrorcannotbecalculatedfromtheinformationgiven.Whichofthefollowingconfidencelevelswillprovidethelargestintervalifthesamesampledataisusedtocreateeachinterval?a.90%6b.95%c.98%d.99%Whichofthefollowingareconditionsthatshouldbeverifiedbeforeusingconfidenceintervalprocedures?a.Thesamplesizeshouldbelarge,inotherwords,bothandshouldbeatleast10.7b.Thesamplemustbearandomlyselectedsamplerfromthepopulation.c.Thedatamustbeconsideredrepresentativeofthepopulationwithregardtothequestionofinterest.《社会统计学》试卷第8页共31页\nd.Alloftheabove.Fillintheblank.AccordingtoPrinciple1forusingconfidenceintervals,avaluenotinaconfidenceintervalcanbe___________asapossiblevalueofthepopulationproportion.a.accepted8b.rejectedc.investigatedd.includedSupposeastudyisconductedtodeterminetheproportionofwomenwhoownavehicle.A95%confidenceintervalfortheproportionofwomensampledwhoownavehicleis(0.25,0.56).Supposeanotherstudyisconductedtodeterminetheproportionofmenwhoownavehicle.A95%confidenceintervalfortheproportionofmensampledwhoownavehicleis(0.55,0.72).Doesitappearthatthepopulationproportionofmenwhoownavehiclediffersfromthepopulationproportionofwomenwhoownavehicle?a.Yes,itdoesappearthatthepopulationproportionformenandwomendiffer.9b.No,itdoesnotappearthatthepopulationproportionformenandwomendiffer.c.Theconfidenceintervalsarenotthesameandthereforethepopulationproportionswillnotbeequal.d.Thereisnotenoughinformationgiventodetermineifthepopulationproportionsdifferformenandwomen.Whatistheconfidencelevelforaconfidenceintervaloftheform,?a.95%10b.98%c.90%d.99%Chapter11《社会统计学》试卷第9页共31页\n得分Whichofthefollowingisnotastepinanyhypothesistest?a.Assumethealternativehypothesisistrueandfindthep-value.1b.Determinethenullandalternativehypotheses.c.Verifynecessarydataconditionsandsummarizethedataintoanappropriateteststatistic.d.Reporttheconclusioninthecontextofthequestionsbeingasked.Fillintheblank.Inhypothesistesting,theresearcherattemptsto__________thenullhypothesis.a.accept2b.rejectc.proved.changeWhichofthefollowingstatementsregardinghypothesistestingisincorrect?a.Hypothesistestingisacategoryofstatisticalinference.3b.Fromhypothesistestingwecanconcludewhetherthenullhypothesisstatementiseithertrueorfalse.Fromhypothesistestingwecanassesswhetherornottheobserveddataisconsistentwiththeassumptionthatthenullc.hypothesisistrueforthepopulation.d.Thenullhypothesisisrejectedifthedatawouldbeunlikelytooccurifthenullhypothesisistrue.Fillintheblank.The________calculatedfromthedataisusedtoevaluatethenullandalternativehypotheses.4a.parameterb.mean《社会统计学》试卷第10页共31页\nc.teststatisticd.proportionWhichofthefollowingisnottruewithregardstoap-value?a.Ap-valueisaprobabilityandmustbebetween0and1.5b.Ap-valueindicatesthestrengthoftheevidenceagainstthenullhypothesis.c.Thelargerthep-valueisthemoreconclusivetheevidenceisagainstthenullhypothesis.d.Ap-valuedoesnottellustheprobabilitythatthenullhypothesisistrue.Whichofthefollowingrepresentsatwo-sidedhypothesistestfortestingaproportion?a.6b.c.d.Whatisthesamplingdistributionofunderthenullhypothesis?Thesamplingdistributionofunderthenullhypothesisisapproximatelynormalwithmeanequaltoandstandarddeviationa.equalto.7Thesamplingdistributionofunderthenullhypothesisisapproximatelynormalwithmeanequaltoandstandarddeviationb.equalto.c.Thesamplingdistributionofunderthenullhypothesisisapproximatelynormalwithmeanequaltoandstandard《社会统计学》试卷第11页共31页\ndeviationequalto.d.Thesamplingdistributionwilldependonthedatacollected.Considerthefollowingapproximatenormalcurveregionsnumberedbelow.8Whatarearepresentsthep-valueareaforanalternativehypothesisof?a.RegionIb.RegionIIc.RegionIIId.RegionIandIIIFillintheblank.A________erroroccurswhenthenullhypothesisisactuallytruebuttheresearcherconcludesthatthealternativehypothesisistrue.a.Type19b.Type2c.Type3《社会统计学》试卷第12页共31页\nd.p-valueWhichofthefollowingisanexampleofanullhypothesis?a.Theproportionofgirlswithblueeyesisgreaterthantheproportionofboyswithblueeyes.10b.TheaverageSATscoreforfemalesisthesameastheaverageSATscoresformales.c.TheproportionofminoritiesadmittedtoCollegeAislessthantheproportionofminoritiesadmittedtoCollegeB.d.TheaverageGPAforstudentathletesdiffersfromtheaverageGPAforstudentswhoarenotschoolathletes.Chapter12得分Fillintheblanks.A_______estimatesa_________.a.Aparameterestimatesastatistic.1b.Aproportionestimatesamean.c.Astatisticestimatesaparameter.d.Ap-valueestimatesaproportion.Whatisthedefinitionofindependentsamples?a.Twosamplesareindependentifthemeasurementsinonesamplearenotrelatedtothemeasurementsintheothersample.2b.Twosamplesareindependentifthemeasurementsinonesamplearethesamemeasurementsintheothersample.c.Twosamplesareindependentifthemeasurementsinonesamplearerelatedtothemeasurementsintheothersample.d.Twosamplesareindependentifthemeasurementsinonesampledonotoverlapthemeasurementsintheothersample.3Whichofthefollowingisnotcalculatedfromasample?《社会统计学》试卷第13页共31页\na.b.c.d.Supposetheproportionofdogsthatareboardedatleast3timesayearinarandomsampleofsize100isfoundtobewith.Alsosupposetheproportionofcatsthatareboardedatleast3timesayearinarandomsampleofsize100iswith.Whichofthefollowingrepresentsanapproximate95%confidenceintervalforthedifferenceintheproportionofdogsandcatsthatareboardedatleast3timesayear?a.(0.009,0.271)4b.(0.322,0.523)c.(0.195,0.379)d.(0.138,0.146)Assumingthesamplestatisticsremainthesame,whatwillhappentothestandarderrorofthedifferencebetweentwosamplestatisticsifthesamplesizeisdecreased?a.Thestandarderrorwilldecrease.5b.Thestandarderrorwillincrease.c.Thestandarderrorwillbethesame.d.Thestandarderrorcalculationwillnotbevalidduetosmallsamplesizes.WhichofthefollowingisnotacharacteristicoftheStudent'stdistribution?6a.Asthedegreesoffreedomgetsmaller,thet-distributiongetsclosertothestandardnormalcurve.《社会统计学》试卷第14页共31页\nb.Itisbell-shapedandcenteredatzerojustlikez.c.Itismorespreadoutthanthestandardnormalcurve.d.Theshapeofthetdistributiondependsonthesamplesizen.Ateacherisinterestedindeterminingifanewmethodforteachingmathiseffective.Sherandomlyselects10studentsandgivesthemthesametestatthebeginningofthesemester(before)asshegivesthemattheendofthesemester(after).CanyouconcludethatthenewmethodwaseffectivefromtheMINITABoutputbelowusing?Whatarethedegreesoffreedomforthisstudy?7a.Sincethep-value=0.155wecannotconcludethatthemethodiseffective.b.Wecanconcludethatthemethodiseffectivesincetheconfidenceintervalincludeszero.c.Sincethep-value=0.155wecannotconcludethatthemethodiseffective.d.Wecanconcludethatthemethodiseffectivesincethep-value=0.155.Whichofthefollowingisacorrectinterpretationoftheyieldforvariety1and2fromtheboxplotbelow?8《社会统计学》试卷第15页共31页\na.Theyieldsappeartobeapproximatelythesameforvariety1and2.b.Itisnotreasonabletoconcludethatthepopulations(variety1andvariety2)haveequalvariances.c.Theyieldisgenerallygreaterforvariety2.d.Thedataaremorevariableforvariety1thanvariety2.ThefollowingMINITABoutputshowsacomparisoninsalesbetweentworestaurants,RestaurantJoe'sandSue'sCafe,duringthelunchperiod.Isthereastatisticallysignificantdifferencebetweenthesalesbetweenthetworestaurantsandisitreasonabletoassumethevariancesareequal?9ThereisastatisticallysignificantdifferencebetweensalesatRestaurantJoe'sandSue'sCaféduringthelunchperiod.Itisa.reasonabletoassumethevariancesareequal.ThereisnotastatisticallysignificantdifferencebetweensalesatRestaurantJoe'sandSue'sCaféduringthelunchperiod.Itb.isreasonabletoassumethevariancesareequal.ThereisnotastatisticallysignificantdifferencebetweensalesatRestaurantJoe'sandSue'sCaféduringthelunchperiod.Itisc.notreasonabletoassumethevariancesareequal.ThereisnotastatisticallysignificantdifferencebetweensalesatRestaurantJoe'sandSue'sCaféduringthelunchperiod.Itd.cannotbeconcludeifthevariancesmaybeequalsinceonlythestandarddeviationsaregiven.《社会统计学》试卷第16页共31页\n2Whatarethenumberofdegreesoffreedomfors,thepooledestimatorof,forn1=50andn2=35?a.4910b.34c.84d.83Chapter13得分Whichofthefollowingstatementsistrue?a.Hypothesesandconclusionapplytothelargerpopulationrepresentedbythesample.1b.Inferenceisonlyvalidifthesampleisrepresentativeofthepopulationofinterest.Ifthedistributionofthequantitativevariableishighlyskewed,theresearchershouldconsideranalyzingthemedianratherc.thanthemean.d.Alloftheabove.Whichofthefollowingisthegeneralformofanullhypothesisforquestionsaboutthemeanofaquantitativevariableforonepopulation?a.2b.c.d.3Whichofthefollowingistheareaassociatedwiththehypothesisusingthet-distributionwith?《社会统计学》试卷第17页共31页\na.Thep-valueisequaltotwotimestheareaabove.b.Thep-valueisequaltotheareaabovet,eveniftisnegative.c.Thep-valueisequaltotheareaabovet,onlyiftispositive.d.Thep-valueisequaltotheareabelowt,eveniftispositive.Whichofthefollowingisanullhypothesisforapairedt-test?a.4b.c.d.Whichofthefollowingarenecessarytofindtherejectionregionforat-Test?a.Determinethesignificancelevel,.5b.Determinethedegreesoffreedomforthetest.c.Determinethecriticalvaluesfromtheappropriatetableofvalueforat-distribution.d.Alloftheabove.SupposearesearcherwantstotestwhetherDrugAperformsdifferentlythanDrugB.Usingthedatabelow,whatisthecorrectvaluefortheappropriatet-statisticforcomparingthesetwosamples?6a.《社会统计学》试卷第18页共31页\nb.c.d.Sincethehypothesesarenotgiventhenullvalueisnotknownandthereforethet-statisticcannotbecomputed.Forwhichofthefollowingsituationswouldaconfidenceintervalanalysisbemostappropriate?a.Aresearcherisinterestintheaveragenumberofmilesapersondrivestoworkdaily.7b.Aresearcherisinterestedinwhetherpatientshavebetterresultswithanewtreatmentascomparedtoaplacebo.Aresearcherisinterestedinwhetherthereisadifferenceintheproportionofchildrenthatattendpreschoolpriortoc.kindergartenforboysandgirls.d.Aresearcherisinterestedinwhetherindividualslostweightorstayedthesamewhenusinganewdietregime.WhichofthefollowingisnottruewithregardstoaType1Error?a.Atype1erroroccurswhenthedecisionisforthealternativehypothesiswheninfactthenullhypothesisistrue.8b.Whenthenullhypothesisisnottrue,atype1errorcannotbemade.c.Thelevelofsignificanceandthe-levelarerarelyequal.Thelevelofsignificanceweuseforahypothesistestprovidestheconditionalprobabilityofatype1errorwhenweassumed.thenullhypothesisistrue.Fillintheblank.Theprobabilityofmakingthecorrectdecisionwhenthealternativehypothesisistrueiscalled______________.a.atype1error9b.atype2errorc.thepowerofatestd.the-level《社会统计学》试卷第19页共31页\nWhatdoestheeffectsizetellusandhowisitrelatedtotheteststatistic?Theeffectsizetellsusinformationabouthowstrongadifferenceisinthepopulation,relativetoanotherpopulationorhypothesizedvalue.Theteststatisticandeffectsize,inmostcases,arerelatedasfollows:a..Theeffectsizetellsushowlikelywearetomakethecorrectdecisionifthealternativehypothesisistrue.Theteststatistic10b.andeffectsize,inmostcases,arerelatedasfollows:.Theeffectsizetellsushowlikelywearetomakethecorrectdecisionifthenullhypothesisistrue.Theteststatisticandeffectc.size,inmostcases,arerelatedasfollows:.Theeffectsizetellsushowlikelywearetomakethecorrectdecision.Theteststatisticandeffectsize,inmostcases,ared.relatedasfollows:.Chapter14得分Whichofthefollowingisnottruewithregardstolinearregression?a.Theregressionlineforsampledataisdescribedas.1b.Theinterceptisb0andisthevalueofwhen.c.Theslopeisb1andistellsushowmuchofanincreaseordecreasethereisforwhenthexvariableincreasesbyoneunit.d.Thereisnolinearrelationshipbetweenxandywhentheslopeis0sincewillbethesameforallvaluesofx.Whichofthefollowingtermsdescribetheresidualofanobservedyvaluefromthesampleregressionline?a.randomerror2b.residualvariationc.residualerrord.Alloftheabove.3Whichofthefollowingistheregressionequationforalinearrelationshipofapopulation?《社会统计学》试卷第20页共31页\na.b.c.d.Whatisthesumoftheresidualsforanyleast-squaresregressionline?a.0b.14c.d.Whichofthefollowingisanestimateofthepopulationstandarddeviationforasimpleregressionmodel?a.5b.c.d.Alloftheaboveareequivalentandthereforeallestimatesof.《社会统计学》试卷第21页共31页\nWhataretheappropriatenullandalternativehypothesesfortestingwhetherornotthereisalinearrelationshipbetweentwovariables,xandy?a.6b.c.d.IfwerejectHoforthehypothesistestof,whatcanweconcludeaboutthehypothesistest?a.Wecanalsorejectthenullhypothesisof.7b.Wewouldfailtorejectthenullhypothesistestfor.c.Wewouldconcludethatxandyarenotcorrelated.Wecannotmakeanyconclusionswithoutknowingthespecificdatacollectedsothatwemaycomputetheappropriatetestd.statisticfor.Canitbeconcludedthattheslopeofthefollowingregressionlineiszero?SupportyouranswerwithevidencefromtheMINITABoutputbelow.8a.Itcannotbeconcludedthattheslopeoftheregressionlineiszerosincethep-valueis0.004.b.Itcanbeconcludedthattheslopeoftheregressionlineiszerosincethep-valueis0.001.c.Itcannotbeconcludedthattheslopeoftheregressionlineiszerosincethecoefficientis32.51.《社会统计学》试卷第22页共31页\nd.Itcannotbeconcludedthattheslopeoftheregressionlineiszerosincethep-valueis0.001.WhatconclusioncanbemaderegardingthepredictionintervalintheMINITABoutputbelow?Note:Someoutputhasbeenomitted.9Thereisaprobabilityof0.95thatarandomlyselectedindividualwhoreceiveda75onthetestwillreceiveafinalscoreinthea.classbetween77and83.Thereisaprobabilityof0.90thatarandomlyselectedindividualwhoreceivedan82onthetestwillreceiveafinalscoreintheb.classbetween72and88.Thereisaprobabilityof0.90thatarandomlyselectedindividualwhoreceiveda75onthetestwillreceiveafinalscoreinthec.classbetween72and88.Thereisaprobabilityof0.95thatarandomlyselectedindividualwhoreceiveda75onthetestwillreceiveafinalscoreinthed.classbetween72and88.Whatisthe95%confidenceintervalforthemeanfinalscoreforanindividual'swhosetestscoreis95fromtheMINITABoutputbelow?Note:Someoutputhasbeenomitted.10a.The95%confidenceintervalforthemeanfinalclassscoreforanindividualwhosetestscoreis95is(69.55,78.28).《社会统计学》试卷第23页共31页\nb.The95%confidenceintervalforthemeanfinalclassscoreforanindividualwhosetestscoreis95is(76.53,84.04).c.The95%confidenceintervalforthemeanfinalclassscoreforanindividualwhosetestscoreis95is(87.21,98.84).d.The95%confidenceintervalforthemeanfinalclassscoreforanindividualwhosetestscoreis95is(81.51,104.54).Chapter15得分Whichofthefollowingvariablesisnotacategoricalvariable?a.Apersonshaircolor1b.Apersonsfavoritecolorc.Apersonsaged.Apersonseducationlevel(highschool,college,postgraduate)Whatarethecommonlyusedguidelinesfortheassumptionofalargesamplewhenusingachi-squarestatisticfortwo-waytables?a.Atleast50%ofthecellsshouldhaveanexpectedcountgreaterthan1.2b.Allexpectedcountsshouldbegreaterthan1.c.Atleast80%ofthecellsshouldhaveanexpectedcountgreaterthan5.d.Bothanswersb)andc).Whatistheexpectedcountforthecellrepresentingwomenwhodonothaveblondhairfromthetablebelow?3a.Theexpectedcountis34.1.《社会统计学》试卷第24页共31页\nb.Theexpectedcountis20.c.Theexpectedcountis30.9.d.Theexpectedcountis40%.Whichofthefollowingisnotapropertyofexpectedcounts?a.Theexpectedcountsarethecountsthatwouldbeexpectedtooccurifthealternativehypothesisweretrue.4b.Thepatternofrowpercentsisidenticalforallrowsofexpectedcounts.c.Thepatternofcolumnpercentsisidenticalforallcolumnsofexpectedcounts.d.Theexpectedcountshavethesamerowandcolumntotalsastheobservedcounts.Supposeastudyisconductedtodetermineifmalesandfemalesdifferintheirpreferenceoftwodifferentfragrances,FragranceAandFragranceB.UsingtheMINITABoutputbelow,whatcanbeconcludedusing?5a.Itcanbeconcludedthattherelationshipbetweengenderandpreferenceoffragranceisnotstatisticallysignificant.b.Thereisastatisticallysignificantrelationshipbetweengenderandpreferenceoffragrances.TheproportionoffemaleswhopreferfragranceAandfragranceBisnotsignificantlydifferentfromtheproportionofmaleswhoc.preferfragranceAandfragranceB.d.Femalesdonothavesignificantlydifferentpreferencesoffragrancethanmales.《社会统计学》试卷第25页共31页\nWhenshouldaz-testbeusedinsteadofachi-squaretestforatwo-waycontingencytable?a.Thez-testshouldbeusedinsteadofthechi-squarewhenthealternativehypothesisistwo-sided.6b.Thez-testshouldbeusedinsteadofthechi-squarewhenthealternativehypothesisisone-sidedoradirectionisspecified.c.Itdependsonthevaluesofthesampledatawhichtestshouldbeused.d.Thez-testshouldneverbeusedoverthechi-squaretestsincethechi-squaretestismoreaccurate.Whatisthep-valueforforatablewith2columnsand3rows?a.p-value=0.00197b.p-value0.0000c.p-value=0.0004d.p-value=0.9981FromthefollowingMINITABoutput,whattypeoftablewasanalyzed?Note:Onlypartoftheoutputisprovidedbelow.a.atable8b.atablec.atabled.antableSupposethatproportionofelementarystudentswhowalktoschool,theproportionthatridethebus,andtheproportionwhoseparents9bringthemtoschoolareallequal.Whatisthenullhypothesisanddothedatacollectedbelowfromarandomsampleof120studentssupportthisstatement?Usethelevelofsignificance.《社会统计学》试卷第26页共31页\nThenullhypothesisis.Yes,thedatadosupportthisstatementsincethep-valueisa.equalto0.9179.Thenullhypothesisis.No,thedatadonotsupportthisstatementsincethep-valueisb.approximatelyzero.c.Thenullhypothesisis.No,thedatadonotsupportthisstatementsincethep-valueis0.0821.d.Thenullhypothesisis.Yes,thedatadonotsupportthisstatementsincethep-valueis0.0821.Whichofthefollowingquantitiesholdsforanytablewithregardstoaz-statisticandachi-squarestatistic?a.foranyz.10b.c.d.Bothanswers(b)and(c).Chapter16得分Whatisthesignificancetesttocomparemorethantwomeansofaquantitativeresponsevariable?a.Student'st-test1b.Standardnormaltestc.Chi-squareanalysisd.AnalysisofVariance2Whatistheteststatisticforananalysisofvariance?《社会统计学》试卷第27页共31页\na.az-statisticb.anF-statisticc.at-statisticd.a-statisticUsingtheMINITABoutputbelow,whichgroupsaresignificantlydifferent?3a.ThemeansfortheDrugAandtheDrugBgrouparesignificantlydifferentfromeachother.b.ThemeansfortheDrugAandPlacebogrouparesignificantlydifferentfromeachother.c.ThemeansfortheDrugBandPlacebogrouparesignificantlydifferentfromeachother.d.Allthemeans(DrugA,DrugBandPlacebo)aresignificantlydifferentfromeachother.Supposeastudyisconductedtocomparefourdifferentoccupationswithrespecttotheaveragesalarywithintheseoccupations.Ifarandomsampleof200individualswithineachoccupationistaken,whatarethedegreesoffreedomfortheF-distributionusedinananalysisofvarianceforthisstudy?4a.ItisanF-distributionwith199degreesoffreedom.b.ItisanF-distributionwith3and199degreesoffreedom.《社会统计学》试卷第28页共31页\nc.ItisanF-distributionwith3and796degreesoffreedom.d.ItisanF-distributionwith4and800degreesoffreedom.IfthevalueofaF-statisticfallsbetweenthecriticalvaluesforand,whatitbeconcludedthattheresultisstatisticallysignificant?a.TheF-statisticwouldbestatisticallysignificantatbothlevelsofsignificance.5b.TheF-statisticwouldnotbestatisticallysignificantateitherlevelofsignificance.c.TheF-statisticwouldbestatisticallysignificantatbutnotat.d.TheF-statisticwouldbestatisticallysignificantatbutnotat.Fillintheblank.A_________forasetofsignificancetestistheprobabilityofmakingoneormoretypeIerrorswhenmorethanonesignificancetestisperformed.a.multiplecomparison6b.familyerrorratec.familyconfidenceleveld.TukeyprocedureUsingthestudymentionedpreviouslyofthreedifferenttypesofmedicationforreducinganindividual'scholesterollevelamultiplecomparisonwasperformedusingTukey'sprocedure.WhichdrugshavemeancholesterollevelsthataresignificantlydifferentfromtheMINITABoutputshownbelow?7a.ThereisastatisticallysignificantdifferencebetweenthemeancholesterollevelsofDrugAandDrugB.《社会统计学》试卷第29页共31页\nb.ThereisastatisticallysignificantdifferencebetweenthemeancholesterollevelsofDrugAandDrugC.c.ThereisastatisticallysignificantdifferencebetweenthemeancholesterollevelsofDrugBandDrugC.ThereisastatisticallysignificantdifferencebetweenthemeancholesterollevelsofDrugAandDrugCandbetweenthemeand.cholesterollevelsofDrugBandDrugC.WhatisthevaluefortheF-statisticthatismissingfromtheANOVAtablebelow?8a.b.c.d.Itcannotbedeterminedfromtheinformationgiven.Supposearesearcherisinterestedinexamininghowgenderandeducationlevelaffectapersonsincome.Whattypeofanalysiswouldbeperformedonthedatacollectedforthisstudyprovidedthenecessaryassumptionsweremet?a.One-wayanalysisofvariance9b.Student'st-testc.Two-wayanalysisofvarianced.Mood'sMedianTestWhatisthevaluemissingfromtheANOVAtablebelow?10《社会统计学》试卷第30页共31页\na.MSE=147.8b.MSE=10.56c.MSE=9.85d.MSE=771.2《社会统计学》试卷第31页共31页