第1題Whichsoftwareareusedinourclass?ARBSigmaplotCRstudioDMatlab正確答案：AC第2題BeforeusinganRpackage,weneedtousefunction()toinstallitfirst.AreadBplotClibraryDinstall.packages第3題Thereare()panelsinRStudio.AoneBtwoCthreeDfour第4題TosetRworkingdirectory,copythefilepath,usebackslash.第5題Basedonthedefinitions,dataisacollectionoffacts.Theycanbenumbers,words,measurements,observationsorjustdescriptionsofthings.第6題Continuousvariablesarenumericvariablesthathaveaninfinitenumberofvaluesbetweenanytwovalues.第7題Therearetwotypesofquantitativevariables.____and____.正確答案：:Discretevariables正確答案：:Continuousvariables第8題Howtorunthecode?AShiftBCtrl+EnterCRunbuttononthetoprightofthetexteditorDEsc正確答案：BC第9題Forwhatisthe‘variableview’inIBMSPSS’sdataeditorused?AEnteringdata.BWritingsyntax.CViewingoutputfromdataanalysis.DDefiningcharacteristicsofvariables.第10題WhichofthenumbersbelowmightIBMSPSSreportas10.574E?05?A0.00010574B10.569C1057400D0000.10574第11題WhichofthenumbersbelowmightIBMSPSSreportas8.96E+03?A89.6B8960C0.00896D8.96第12題Pointoutthecorrectstatement:().ADatahasonlyqualitativevalue.BDatahasbothqualitativeandquantitativevalue.CDatahasonlyquantitativevalue.DNoneoftheabove.第13題Numericalandpictorialinformationaboutvariablesarecalled:().AAnalyticalstatisticsBDescriptivestatisticsCInferentialstatistics第14題Theentiregroupofinterestforastatisticalconclusioniscalledthe:().ADataBPopulationCSample第15題Asubgroupthatisrepresentativeofapopulationiscalled:().AAcategoryBDataCAsample第1題Afactorymanagerobservestheoutput(tons)ofthesameperiodforsixconsecutiveweeks,andthedataisasfollows:110,150,170,210,150,120,calculatethearithmeticmeanandmedianoftheoutput:____,____.(retain2decimalplaces)正確答案：:151.67正確答案：:150第2題Ninehouseholdswererandomlyselectedfromacertaincity,andthedataonthepercapitamonthlyincomeofeachhouseholdwasobtainedbythesurvey:1080,750,780,1080,850,960,2000,1250,1630(unit:yuan),thentheaveragepercapitamonthlyincomeis____,themedianis____.正確答案：:1153.3正確答案：:1080第3題Keepthefollowingfigureswith3significantdigits:3.159:____,13666:____.正確答案：:3.16正確答案：:1.37x104第4題Itisknownthattheresultsofthesamesampletestedbydifferentinstrumentsare:`x1=4.5±0.2,`x2=4.32±0.01,andtheaveragevalueis____.(retain2decimalplaces)正確答案：:4.28第5題Standarddeviationof3.48,3.37,3.40,3.38is____.正確答案：:0.05第6題Howdoestheimagelook?Ifthedataofhistogramconcentrateontherightside.AdarkerBbrighterCblackDnormal第7題Ifwedraganddropinthecumulativehistogramandstretchitdiagonallyintoatriangleshape,wewillgetabalancedblackandwhiteimage.第8題Histogramsdisplaythedistributionofa____variablebydividingtherangeofscoresintoaspecifiednumberofbinsonthex-axisanddisplayingthe____ofscoresineachbinonthey-axis.正確答案：:continuous正確答案：:frequency第9題Anormaldistributioniswithoutany____,asitissymmetricalonbothsides.正確答案：:skewness第10題Abox-and-whiskersplotdescribesthedistributionofacontinuousvariablebyplottingits().AminimumBmaximumClowerquartileDmedianEupperquartile正確答案：ABCDE第11題Alongthey-axisofhistogram,fromlefttorightrepresentstheelevationnumberfromhightolow,andthecoloronthegrayscaleimagechangesfromblacktowhite.第12題They-axisofhistogramrepresentsthenumberofpixelsontheimage第13題Thehistogramdisplaysthepixelvaluesonthex-axisandthecountonthey-axis.第14題Theaverageindexreflectsthegenerallevelofthephenomenon,butitconcealsthedifferencesoftheoverallunits,sothisindexalonecannotfullyreflectthecharacteristicsoftheoverall.第15題Becausethemedianpositionisinthemiddle,soinanarithmeticseriesoranormaldistributionseries,themedianisequaltothearithmeticmean.第16題TheskewnesscoefficientSKisanindexusedtomeasurewhetherthedistributionissymmetricalandskewed,whenSK____,indicatesthatthedistributionissymmetric;whenSK____,indicatesthatthedistributionisskewedtotheright;whenSK____,indicatesthatthedistributionisskewedtotheleft.正確答案：:>0正確答案：:=0正確答案：:<0第17題WecanuseRtocreatesomebasicplots.Theseplotsinclude().AbarplotBhistogramCscatterplotDlineplot正確答案：ABCD第18題Abarplotdisplaysthe____ofacategoricalvariablethroughverticalorhorizontalbars.正確答案：:distribution第19題Intermsoftheoverallfrequencydistribution,if`X-M0>0,thenthedistributionis().ARightskewedBLeftskewedCSymmetricaldistributionDCan'tjudge第20題Thesizeofthestandarddeviationvalueisaffectedby().AThedegreeofchangeintheoverallunitmarkvalue.BTheaveragelevelofthevariableseries.CTheunitofmeasurement.DThenatureofthevariable.EThefrequencydistributionofthevariableseries.正確答案：AE第21題Modeandmedian().AAreallnumericalaverages.BCanbeusedasarepresentativevalueofthegenerallevel.CAreusedtoreflecttheaverageofthecentraltendencyofthevariable.DAverageposition.EArenotaffectedbyextremevariablevalues.正確答案：BCDE第22題Varianceisthemostimportantindicatortomeasurethedegreeofdatavariation.Itistheaverageofthesumofsquareddeviationsofeachdatafromitsarithmeticmean.第23題Thehigherthedegreeofvariationofthevariable,thehighertherepresentativenessofitsaverageindex.第24題Whencomparingthedegreeofdifferenceintheidentificationoftwovariableserieswithdifferentproperties,theanalysisindexthatshouldbecalculatedis().AStandarddeviationBVarianceCTotaldistanceDDispersioncoefficient第25題Add5toalltheflagvaluesofavariable,thenthestandarddeviation().AIncreaseBDecreaseCUnchangedDCan'tjudgeChapterTest-3第1題Usingsamplingsurveydatatoinferquantitativecharacteristicsofthepopulationwillinevitablyleadtosamplingerrors.第2題Whenthelimiterrorissmaller,thenumberofnecessarysampleunitstobedrawnisalsosmaller.第3題Theaveragesamplingerroritselfdoesnotchangewithdifferentsampleestimates.Therefore,theaveragesamplingerrorisnotarandomvariable.第4題InSPSS,whenperformingsimplerandomsampling,weneedtoclick____-____-____.正確答案：:Data正確答案：:Selectcases正確答案：:Randomsampleofcases第5題Accordingtothesamplingdistributiontheoryofsamplevariance,forasimplerandomsamplefromanormalpopulation,thesamplingdistributionobeys()distributionwith(n-1)degreesoffreedom.Aχ2BZCFDt第6題Thesteepnessofthenormalcurvedependsonthesizeofσ,so().AThelargertheσ,thesmootherthenormalcurve.BThesmallertheσ,thesmootherthenormalcurve.CThesmallertheσ,thesteeperthenormalcurve.DThelargertheσ,thesteeperthenormalcurve.ETheaboveACitemsarecorrect.正確答案：ACE第7題Toestimatetheintervalbetweenthetwopopulationmeans,thefollowingfactorsshouldbeconsidered().AIsthesamplesizealargesampleorasmallsample.BWhetherthepopulationobeysanormaldistribution.CIsthepopulationvarianceknown.DIsthesampleanindependentsampleoramatchedsample.EIstheoverallratioknown.正確答案：ABCD第8題Theaveragesamplingerroris().AStandarddeviationofpopulationparametersBSamplestandarddeviationCStandarddeviationofsampleestimatorDAveragedifferenceinsampleestimator第9題Withoutrepeatedsampling,therelationshipbetweenthemathematicalexpectationofthesamplemean`Xandtheoverallmeanμis().AE(`X)=μ/nBE(`X)=μCE(`X)=μ(N-n)/NDE(`X)=μ(N-n)/(N-1)第10題Thesamplemeanisa/an()ofthepopulationmean.AUnbiasedestimatorBBiasedestimatorCNon-uniformestimatorDIneffectiveestimatorChapterTest-4第1題Whatarethewaystodealwithmissingdata?AIgnoreit.BModification.CDeletion.DImputation.正確答案：ACD第2題Generallyspeaking,whatarethetypesofmissingvalues?AMissingcompletelyatrandom.BMissingatrandom.CMissingcompletelyatrandom.DAccidentalmissing.正確答案：ABC第3題Missingvalueswillreducetherepresentativenessofthesample,thuscausingincorrectinferencesaboutthepopulation.第4題Usingthemeantofillinmissingvaluesdoesnotreducethevarianceofthedataset.第5題Findtheoutliersinthegivendatasetbelow.()68,6,74,70,82A6B82C68D70第6題Findtheoutliersinthegivendatasetbelow.()30,29,28,26,1,2,42,44A42,44B1,2C1,26D30,42第7題Whichofthefollowingstatementsaboutoutliersisnottrue?AOutliersarevaluesverydifferentfromtherestofthedata.BInfluentialcaseswillalwaysshowupasoutliers.COutliershaveaneffectonthemean.DOutliershaveaneffectonregressionparameters.第8題Whatistheeffectofanoutlieronthevalueofacorrelationcoefficient?AAnoutlierwillalwaysdecreaseacorrelationcoefficient.BAnoutlierwillalwaysincreaseacorrelationcoefficient.CAnoutliermighteitherdecreaseorincreaseacorrelationcoefficient,dependingonwhereitisinrelationtotheotherpoints.DAnoutlierwillhavenoeffectonacorrelationcoefficient.第9題Whatisanoutlier?AAtypeofvariablethatcannotbequantified.BAcompulsiveliarwhoisproudtobegay.CAscorethatisleftoutoftheanalysisbecauseofmissingdata.DAnextremevalueateitherendofadistribution.第10題Tomeetstatisticalmodelassumptions,theformsofdatastandardizationwecancarryoutare().ANormality.BLinearity.CHomogeneityofvariance.DClusteranalysis.正確答案：ABCDChapterTest-5第1題Assumingthattheprobabilityofoccurrenceofthefirsttypeoferrorandthesecondtypeoferrorinthetwotypesoferrorsinthehypothesistestisαandβ,respectively,therelationshipbetweenthetwois:thelargerα,thelargerβ;thesmallerα,thesmallerβ.第2題Asmallprobabilityeventdoesnotnecessarilyhappen,andahighprobabilityeventdoesnotnecessarilyhappen.第3題Parameterestimationandhypothesistestingarepartofinferentialstatistics.第4題Accordingtotheerrorrepresentationmethod,theerrorisdividedintoabsoluteerrorand().ARelativeerrorBSystemerrorCAccidentalerrorDMethoderror第5題Ifμrepresentstheoverallmeantobetestedandμ0representstheassumedaveragelevel,thehypothesisoftheoverallaveragehasthefollowingsituations:().AH0:μ=μ0;H1:μ1μ0BH0:μ≥μ0;H1:μ<μ0CH0:μ≤μ0;H1:μ>μ0DH0:μ>μ0;H1:μ<μ0EH0:μ<μ0;H1:μ>μ0正確答案：ABC第6題Thefollowingsituationscandoχ2testorFtest:().ATestforthevarianceofasinglenormalpopulation.BTestforthedifferencebetweentheproportionsofasinglenormalpopulation.CTestforthedifferenceofthemeanofasinglenormalpopulation.DTestforthemeanofasinglenormalpopulation.ESinglenormalpopulationvarianceratiotest.正確答案：AE第7題Whenwedohypothesistesting,wewillmaketwokindsofmistakes:thefirsttypeoferroristhatthenullhypothesisiscorrectandyoujudgeittobewrong;thesecondtypeoferroristhatthenullhypothesisiswrongandyoujudgeittobecorrect.第8題Toreducethechanceofbothtypesoferrorsatthesametime,youcantakethefollowingmeasures:().AIncreasesamplesizen.BReducetheprobabilityofmakingthefirsttypeofmistakeα.CReducetheprobabilityofmakingthesecondtypeofmistakeβ.DDecreasesamplesizen.第9題Inthehypothesistestoftheoverallmean,setthesignificancelevelα=0.05,thecriticalvalueZα/2=Z0.025=1.96,Zα=Z0.05=1.645,thentheacceptancedomainforthetwo-sidedtestandtheleftone-sidedtest.Theaccepteddomainsare:().A-1.96B-1.96F6-1.645CΙZΙ>1.96;Z<-1.645DΙZΙ>1.96;Z>-1.645第10題Smallprobabilityeventsinstatistics:()ATheeventwithP<0.05isthelowprobabilityeventboundary.BTheeventwithP<0.01isthelowprobabilityeventboundary.CEventswithP<0.05arelikelytooccur.DTheeventwithP=0.05isclassifiedasahighprobabilityevent.ENoneoftheabove.正確答案：EChapterTest-6第1題TheWilcoxonsigned-ranktestassumesthatthedataaredistributed____aroundthe____.正確答案：:symmetrically正確答案：:median第2題TheWilcoxontestisanon-parametricalternativetothet-testforcomparingtwomeans.第3題Thepairedsamplet-testisusedtocomparethemeansoftwounrelatedgroupsofsamples.第4題Thedifferenttypesofnon-parametrictest,including().Aone-samplenon-parametrictestBregressionanalysisCindependentsamplesnon-parametrictestDpairedsamplesnon-parametrictest正確答案：ACD第5題One-sample____testisusedtoassesswhetherthemedianofthesampleisequaltoaknownstandardortheoreticalvalue.正確答案：:Wilcoxonsignedrank第6題____isanon-parametricalternativetotheindependenttwosamplest-testforcomparingtwoindependentgroupsofsamples,inthesituationwherethedataarenotnormallydistributed.正確答案：:Wilcoxonranksumtest第7題Thedifferenttypesoft-test,including().Aone-samplet-testBindependentsamplest-testCpairedsamplest-testDthree-samplet-test正確答案：ABC第8題Wecanusefunctionget_summary_statstocomputesummarystatistics,e.g.,____,____and____.正確答案：:count正確答案：:mean正確答案：:standarddeviation第9題Outlierscanbeeasilyidentifiedusingboxplotmethods,implementedintheRfunction____.正確答案：:identify_outliers第10題Thenormalityassumptioncanbecheckedbycomputingthe____test.正確答案：:Shapiro-Wilk第11題Ifthehypothesistestpforthecomparisonofthetwosamplemeansisfarlessthan0.01,itmeansthatthedifferencebetweenthetwopopulationmeansisrelativelylarge.第12題Fortheone-samplet-test,SPSSnormalitytestresults:Z=0.598,P=0.868,itcanbeconsideredthatthesampledoesnotconformtothenormaldistribution.第13題IntheSPSSoperationofindependentsamplettest,wefirstneedtoclick____-____-____.正確答案：:Independent-SamplesT-Test正確答案：:CompareMeans正確答案：:Analyze第14題One-samplet-testisusedtocomparethepopulationmeanofthe____samplewiththeknown____.正確答案：:sample正確答案：:population第15題Samplestatisticsare`X=4.9,s=1.08,andn=24.99%confidenceintervalis().A(4.28,5.52)B(4.34,5.45)C(4.44,5.36)第16題Forthepairedsampletest,itisnecessarytoassume().AThetwopopulationsareindependent.BBothsamplesfollowanormaldistribution.CThesampleisrandomlydrawn.DBoththepopulationsobeythenormaldistribution.正確答案：CD第17題Whichofthefollowingtests()isanexampleofnon-parametricmethod?AT-testBZ-testCSigntestDAlltheabove正確答案：C第18題Thepvaluereflectswhetherthedifferencebetweenthetwopopulationmeansisstatisticallysignificant,anddoesnotindicatethesizeofthedifference.第19題Tworandomsampleshavebeenselectedandatwosamplet‐testforthedifferenceinpopulationmeansisconductedwithH0:μ1=μ2,H1:μ1>μ2.Theresultsares1=2.5,`X1=9.7,n1=30,s2=2.9,`X2=9.1,andn2=35.Thestandarderrorofthesamplingdistributionis().A0.408B0.67C0.947D0.586第20題Tworandomsampleshavebeenselectedandatwosamplet‐testforthedifferenceinpopulationmeansisconductedwithH0:μ1=μ2vs.H1:μ1>μ2.Theresultsares1=2.5,`X1=9.7,n1=30,s2=2.9,`X2=9.1,andn2=35.Thevalueoftheteststatisticis().A0.634B0.896C1.471D0.398第21題Ifa90%confidenceintervalforthepopulationproportionisconstructed,thebestestimateforthestandarderrorofthesamplingdistributionis().A0.068B0.074C2.962D1.256第22題Aonesamplet‐testisconductedonH0:μ=81.6.Thesamplehas`X1=84.1,s=3.1,andn=25.Theteststatisticis().A0.806B1.803C4.032D2.274第23題Comparisonofthetwosamplemeans,thetestresultP>0.05illustrate().AThedifferencebetweenthetwopopulationmeansissmall.BThedifferencebetweenthetwopopulationmeansislarge.CSupporttheconclusionthatthetwopopulationsaredifferent.DDoesnotsupporttheconclusionthatthetwopopulationsaredifferent.第24題Intheoperationofthecomparemeansprocess,select()inthe"independentvariablelist"column.ACategoricalvariables.BCharactervariables.CContinuousnumericalvariables.DTimevariables.第25題Modevaluefordatasetis():0,2,3,5,6,6,6,6,6,7,8,9,10,10,10,10,11,12,14,15,15,15.A6B10C12D15第26題()isthesimplestandmostwidelyusednon-parametrictest.ASigntestBK-StestCChi-squaretestDWilcoxonmatchedpairedtestChapterTest-7第1題ThevalueofFDATAforthistestis:____.正確答案：:5.39第2題Themaingoaloftwo-wayANOVAistoevaluateifthereisastatisticallysignificant____effectbetweentwofactorsinexplainingacontinuousoutcomevariable.正確答案：:interaction第3題Aninteractioneffectoccurswhentheeffectofoneindependentvariableonanoutcomevariabledependsontheleveloftheotherindependentvariables.第4題Wecanuse____and____tochecknormalityassumption.正確答案：:QQplot正確答案：:Shapiro-Wilktest第5題IntheQQplot,asallthepointsfallapproximatelyalongthereferenceline,wecanassumenormality.第6題TheANOVAtestisusedtocomparethe()ofmultiplegroups.AmedianBmeanCpvalueDsum第7題One-wayANOVAisanextensionofthe()forcomparingthemeansinasituationwheretherearemorethantwogroups.Aone-samplet-testBpairedsamplest-testCindependentsamplest-testDone-samplenon-parametrictest第8題BeforecomputingANOVAtest,youneedtoperformsomepreliminaryteststocheckiftheassumptionsaremet,including().AnosignificantoutliersBthedatashouldbeapproximatelynormallydistributedCthevarianceoftheoutcomevariableshouldbeequalDequalsamplesize正確答案：ABC第9題Wecreatea()plotofresidualstochecknormalityassumption.AscreeBQQCpieDhistogram第10題Wecanuse____tocheckthehomogeneityofvariances.正確答案：:theLevene’stest第11題Wecanassumenormalityofthedatawhenpvaluelessthan0.05asassessedbyShapiro-Wilk’stestofnormality.第12題Anydifferenceinpopulationmeansinanalysisofvariancewillinflatetheerrorsumofsquares.第13題ANOVAcannotbeusedwhentestingdatacollectedineducationalresearchasitcannotbeappliedtosocialscience.第14題Inone-wayanalysisofvariance,thesamplesizesdrawnfromdifferentlevelsmustbeequal.第15題InSPSS,toperformatwo-wayANOVA,youshouldclick____--____--____enterthewindow.正確答案：:Univariate正確答案：:GeneralLinearModel正確答案：:Analyze第16題InSPSS,atwo-wayANOVAwithinteractionisperformed,and____--____typeshouldbeselectedinthemodel.正確答案：:Custom正確答案：:Interaction第17題Thenullhypothesisforthisanalysisis:ANotallthefishpopulationshavethesamemean.BAtleastoneofthefishpopulationshasadifferentmean.Cμ1=μ2=μ3Dμ1=μ2=μ3=0ENoneofthese.第18題InANOVA,thereare4groupsdataandatotalsamplesizeis44,thecomputedFstatisticis2.33.Inthiscase,thep-valueis:().AGreaterthan0.05.BExactly0.05.CCannottell–itdependsonwhattheSSEis.DLessthan0.05.第19題What()isvarianceofthedataset:2,10,1,9,and3?A15.5B17.5C5.5D7.5第20題Ifkdenotesthedegreeoffreedom,thenthevarianceofChi-squaredistributionis().Ak/2Bk–1Ck–2D2k第21題Amachineproduces0,1or2defectivepiecesinadaywithanassociatedprobabilityof1/6,2/3and1/6respectively.Themeanvalueandthevarianceofthenumberofdefectivepiecesproducedbythemachineinaday,respectively,are().A1and1/3B1/3and1C1and4/3D1/3and4/3第22題Apersondecidestotossafaircoinrepeatedlyuntilhegetsahead.Hewillmakeatmost3tosses.LettherandomvariableYdenotethenumberofheads.Thevalueofvar{Y},wherevar{.}denotesthevariance,equals().A7/8B49/64C7/64D105/64第23題IfthevalueoftheinspectionquantityFisapproximatelyequalto1,itmeans().AThevariancebetweengroupsdoesnotincludetheinfluenceofsystemfactors.BThewithin-groupvariancedoesnotincludetheinfluenceofsystemfactors.CThebetween-groupvarianceincludestheinfluenceofsystemfactors.DThenullhypothesisshouldberejectedintheanalysisofvariance.正確答案：ABD第24題Thespecificstepsofone-wayanalysisofvarianceare().ACalculateddataerror.BDetermineteststatistics.CDeterminethenullhypothesisandalternativehypothesis.DCalculatethemean.EJudgingthesignificanceandmakingstatisticaldecisions.正確答案：CDABE第25題Inasimpleanalysisofvarianceproblem,whichofthefollowing()isanestimateofthevarianceofindividualmeasurements(afterthevariouseffectshavebeenaccountedfor)?AMS(between).BMS(within).CMS(total).DNoneoftheabove.第26題Amongthefollowingassumptions,whichone()isnotincludedintheassumptionsintheanalysisofvariance?AEverypopulationobeysanormaldistribution.BThevariancesofallpopulationsareequal.CObservationsareindependent.DThevarianceofeachpopulationisequalto0.ChapterTest-8第1題IftwovariablesXandYareindependent,thenthecorrelationcoefficientbetweenthemis____.正確答案：:0第2題Ifthecorrelationcoefficientandcovariancebetweenxandyis0.6and27,andvarianceofyis25,thenthevarianceofxis____.正確答案：:81第3題Theregressioncoefficientsofabivariatedistributionare-0.64and-0.36.Thenthecorrelationcoefficientofthedistributionis____.正確答案：:-0.48第4題Ifthesumofthesquaresofdifferenceofranksof6candidatesintwocriteriais21,therankcorrelationcoefficientis____.正確答案：:0.4第5題Giventhatr=0.42,cov(x,y)=10.5,var(x)=16;thestandarddeviationofyis____.正確答案：:6.25第6題Ifthep-valueofMoran'sIisstatisticallysignificant,andthez-scoreispositive,itmeansThespatialdistributionofhighvaluesand/orlowvaluesinthedatasetismorespatially______AclusteredBdispersedCrandomDlayered第7題Ifthep-valueofMoran'sIisstatisticallysignificant,andthez-scoreisnegative,itmeansThespatialdistributionofhighvaluesand/orlowvaluesinthedatasetismorespatially______AclusteredBdispersedCrandomDlayered第8題Ifthep-valueisnotstatisticallysignificant,itmeansThespatialdistributionofhighvaluesand/orlowvaluesinthedatasetisspatially______AclusteredBdispersedCrandomDlayered第9題Moran'sIevaluateswhetherthepatternexpressedisclustered,dispersed,orrandom.第10題ThemajordifferencebetweenMoran'sIandPearson'scorrelationisthatweonlyhaveonerandomvariableXinPearson'scorrelationequation,buttwovariablesasXandYinMoran'sI.第11題Kendallrankcorrelationtestmaybeusedifthedatadonotnecessarilycomefromabivariatenormaldistribution.第12題A____correlationdeterminesthelinearrelationshipbetweentwovariableswhenaccountingforoneormoreothervariables.正確答案：:partial第13題Youcanusefunction____and____plottovisualizedata.正確答案：:ggscatter正確答案：:scatter第14題Youcanusefunction____torunthepartialcorrelationanalysis.正確答案：:pcor.test第15題Thepartialcorrelationco-efficientvariesbetween-1and+1.第16題Thecalculationofpartialcorrelationco-efficientisbasedonthesimplecorrelationco-efficient.第17題Whichofthefollowingindicatesthestrongestrelationship?A

r=0.08B

r=0.5

C

r=-0.6

D

r2=

0.2第18題____isusedtoevaluatetheassociationbetweentwoormorevariables.正確答案：:Correlationtest第19題Thedifferentcorrelationmethods,including____,____,and____.正確答案：:Pearsoncorrelation正確答案：:Kendallrankcorrelation正確答案：:Spearmanrankcorrelation第20題Pearsoncorrelationcanbeusedonlywhenxandyarefromnormaldistribution.第21題Weneedtodosomepreliminarytesttocheckthetestassumptions().AIsthecovariationlinear?BArethedatafromeachofthe2variables(x,y)followanormaldistribution?CheterogeneityDequalsample正確答案：AB第22題Ifthecorrelationcoefficientis0.8,thepercentageofvariationintheresponsevariableexplainedbythevariationintheexplanatoryvariableis().A0.008B0.8C0.0064D0.64第23題Fromtheperspectiveofthedegreeofcorrelationofvariables,thecorrelationcanbedividedinto().ATotallyrelated.BLinearcorrelation.CIrrelevant.DSimplecorrelation.ENotcompletelyrelevant.正確答案：ACE第24題Partialcorrelationcoefficientistocalculatethecorrelationcoefficientbetweenvariablesafterexcludingtheinfluenceofothervariables.第25題Thereisasamplingerrorbetweenthesamplecorrelationcoefficientandtheoverallcorrelationcoefficient.第26題TorunapartialcorrelationsinSPSS,click____--____--____.正確答案：:Analyze正確答案：:Correlate正確答案：:Partial第27題WhenperformingcorrelationtestsinSPSS,wehavethreeoptionsforcorrelationcoefficientanalysis:____,____,____.正確答案：:Spearman正確答案：:Kendall正確答案：:Pearson第28題Thecovarianceis():AAllofthese.BAmeasureofthestrengthofrelationshipbetweentwovariables.CDependentontheunitsofmeasurementofthevariables.DAnunstandardizedversionofthecorrelationcoefficient.第29題TheCoefficientofCorrelationisindependentof().AOriginonly.BThescaleofMeasurementonly.CBothchangeoforiginandscaleofmeasurement.DNoneofthese.第30題The

CoefficientofCorrelation

between

U=X

and

V=?X

is().A1B-1C0D0.5第31題IfthecorrelationcoefficientbetweenthevariablesXandYisρ,thecorrelationcoefficientbetweenX2andY2is().AρBρ2C1第32題Homogeneityofthreeormorepopulationcorrelationcoefficientscanbetestedby().AT-testBZ-testCχ2-testDF-testChapterTest-9第1題Iftheregressioncoefficientofxonyandyonxareandrespectively,thenthecorrelationcoefficientbetweenxandyis____.正確答案：:-0.25第2題Thedifferentsolutionsextendingthelinearregressionmodelforcapturingthenonlineareffects,including().ALinearregressionBPolynomialregressionCSplineregressionDGeneralizedadditivemodels正確答案：BCD第3題Thecoefficientofcorrelationwhencoefficientsofregressionare0.2and1.8is____.正確答案：:0.6第4題Inthisspacaltrendanalysisexample,weset____as"Zvaluefield"正確答案：:temperature第5題Conceptually,trendinterpolationisliketakingapieceofpaperandfittingitbetweenraisedpoints第6題Imagetrendanalysistakesthecoordinatesx-axisandy-axisasvariables第7題if"Polynomialorder"issetas1,thetypeofregressionis______AlinearregressionBlogisticregressionCbayesianlinearregressionDridgeregression第8題Trendresultsinasmoothsurfacethatrepresentsgradualtrendsinthesurfaceovertheareaofinterest.第9題Weusenon-linearregressionmodelswhenthetruerelationshipbetweentheoutcomeandapredictorvariableisnotlinear.第10題The____andthe____metricscanbeusedtocomparethedifferentmodels.正確答案：:RMSE正確答案：:R2第11題Thebestmodelisthemodelwiththe____RMSEandthe____R2.正確答案：:lowest正確答案：:highest第12題Whenyouhaveanon-linearrelationship,youcantrya____transformationofthepredictorvaria