61.Alfonsohasnoticedthatincreasesinunemploymentinsuranceclaimsareassociatedwithrecessions,andthereforeheadvocateslimitsonunemploymentinsurancesoastopreventrecessions.Maryhasnoticedthatmostdrugaddictsonceattendedschools,andthereforesheadvocatesgettingridofschoolssoastopreventdrugaddiction. a.ThereasoningofbothAlfonsoandMarysuffersfromtheomittedvariableproblem. b.ThereasoningofbothAlfonsoandMarysuffersfromthereversecausalityproblem. c.Alfonso’sreasoningsuffersfromthereversecausalityproblem,andMary’sreasoningsuffersfromtheomittedvariableproblem. d.Mary’sreasoningsuffersfromthereversecausalityproblem,andAlfonso’sreasoningsuffersfromtheomittedvariableproblem. 62.Intheearly19thcentury,theRussiangovernmentsentdoctorstosouthernRussianvillagestoprovideassistanceduringacholeraepidemic.Thevillagersnoticedthatwhereverdoctorsappeared,peopledied.Therefore,manydoctorswerechasedawayfromvillages,andsomewereevenkilled.Thisreactiontothecorrelationbetweendoctorsanddeathsismostlikelyaproblemof a.omittedvariables. b.reversecausality. c.governmentpropaganda. d.medicalincompetence. 63.Theargumentthatpurchasesofminivanscauselargefamiliesisanexampleof a.omittedvariables. b.normativestatements. c.reversecausality. d.bias. Figure2-19 Inthefollowinggraphthex-axisshowsthenumberoftimesacommuterrailtrainstopsatastationperhourandthey-axisshowsthenumberofcommuterrailpassengersperhour. CommuterRailPassengersbyFrequencyofService 64.RefertoFigure2-19.Whichofthefollowingconclusionsshouldnotbedrawnfromobservingthisgraph? a.Thereisapositivecorrelationbetweenthefrequencyofserviceandthenumberofpassengers. b.Whenthereare5stopsperhour,thereareapproximately200passengers. c.Morestopsperhourisassociatedwithmorepassengersperhour. d.Nootherfactorsbesidesthefrequencyofserviceaffectthenumberofpassengers. 65.RefertoFigure2-19.Apolicymakerobservesthisgraphandconcludesthatincreasingthefrequencyofcommuterrailserviceisacertainwaytogetmorecommuterstochoosethecommuterrailinsteadofdrivingtheirowncars.Youwarnthepolicymakeraboutmakingareversecausalitymistakewithwhichofthefollowingstatements? a.Highergaspricesarecausingmorepeopletochoosethecommuterrailoverdriving. b.Theservicefrequencywasincreasedinresponsetoanincreaseinthenumberofpassengersperhour. c.Thereisapositiverelationshipbetweenfrequencyofstopsandnumberofpassengers. d.Noneoftheaboveiscorrect. Figure2-20 RelationshipBetweenYearsofEducationandAnnualIncome 66.RefertoFigure2-20.Thegraphaboveisa a.bargraph b.scatterplot c.piechart d.timeseriesanalysis 67.RefertoFigure2-20.Accordingtothegraph,thecorrelationbetweenyearsofeducationandannualincomeis a.positive b.negative c.inverse d.normative 68.RefertoFigure2-20.SenatorSmithobservesthegraphandconcludesthatpeoplewhoearnhigherincomesattendschoolformoreyears.SenatorJonesobservesthegraphandconcludesthatpeoplewhoattendschoolformoreyearsearnhigherincomes.Whoiscorrect? a.SenatorSmithiscorrect. b.SenatorJonesiscorrect. c.Itisdifficulttosaywhichsenatormightbecorrectduetothereversecausalityproblem. d.Itisdifficulttosaywhichsenatormightbecorrectduetoomittedvariablebias. 69.Intheorderedpair(3,6),3isthe a.x-coordinate. b.y-coordinate. c.origin. d.slope. 70.Betweenthetwoorderedpairs(3,6)and(7,18),theslopeisa.1/3 b.-1/3. c.3. d.-3. Figure2-21 71.RefertoFigure2-21.Accordingtothegraph,snowstorms a.andsnowblowerssoldarepositivelycorrelated. b.andsnowblowerssoldarenegativelycorrelated […]