TEST BANK
m
,MULTIPLEmCHOICE.
Choosemthemonemalternativemthatmbestmcompletesmthemstatementmormanswersmthemquestion.
Solvemthemproblem.
1) Inmamsamplemofm775mseniormcitizens,mapproximatelym67%msaidmthatmtheymhadmseenma 1) m
mtelevisionmcommercialm formlifeminsurance.m Aboutm howm manym seniorm citizensm ism
this?
A) Notmenoughminformationmavailable. B)m 519
C)m67 D)m256
Answer:m B
2) Amtwo-waymtablemcouldmbemusedmformwhichmofmthemfollowingmpairsmofmvariables? 2)m
A) Gendermandmage B)mAgemandmfavoritemclass
C)mGendermandmfavoritemclass
D)mAgemandmheig
htmAnswer:m C
Indicatemwhethermthemstudymdescribedmismanmobservationalmstudymormamcontrolledmexperiment.
3) "Peoplemwithmdiabetesmarematmhighermriskmformcertainmcancersmthanmthosemwithoutmthembl 3) m
oodmsugarmdisease,m suggestsm am newm studym basedm onm amtelephonem surveym ofmnearlym
400,000m adults."
A) Controlledmexperiment
B)mObservationalmstudymAnswer:m B
SHORTmANSWER.mWritemthemwordmormphrasemthatmbestmcompletesmeachmstatementmormanswersmthemquesti
on.
Answermthemquestion.
4) ThemnumbermofmclinicallymobesemmenminmStatemAmism156,261mandmthemnumbermofmclinica 4) m
llymobesemmenminmStatemBmism294,269.mSomeonemmakesmthemclaimmthatmthismismevidencem
thatmmenmexercisemmorem inm Statem A.m Whatm informationmism missingm thatm mightmcontr
adictmthismclaim?
Answer:m Wem needm tom knowm them totalm numberm ofm menm inm Statem Am andm Statem Bm so
m thatm amcomparisonmcanmbemmademofmthempercentagemofmthemmenminmeachmstate
mthatmaremclinicallymobese.mTheremcouldmbemammuchmhigherm malempopulationmin
mStatem BmthanmStatemA.mAlso,massumptionsmaboutmexercisemandmobesitymarembei
ngmmade.
1
,MULTIPLEmCHOICE.mChoosemthemonemalternativemthatmbestmcompletesmthemstatementmormanswersmthemq
uestion.
UsemthemdataminmTablem1Amtomanswerm themquestion.
Note:m1mismfemale,m0mismmale.
5) Supposemyoumwantedmtomknowmwhethermthemstudent'smcommutemdistancemwasmassociatedm 5) m
withmthemstudent'sm livingmsituation.m Usingm them datamtablemifm possible,mwhichmvariables
m wouldmyoum use?
A) UsemCommutemDistancem(Miles)mandmLivingmSituation.
B) Datamonmstudent'smlivingmsituationmaremnotmincludedminmthismstudy.
C) UsemCommutemDistancem(Miles)mandmCollegemUnitsmAcquired.
D) UsemCollegemUnitsmAcquiredmandmLivingmSituat
ion.mAnswer:m A
Inmamstudymofm1350melementarymschoolmchildren,m118moutm ofmthem615mgirlsminmthemstudymsaidmtheymwantmtombemamt
eacherm whenmtheymgrowmup.
6) Whatmpercentmofmgirlsmwantmtombemamteachermwhenmtheymgrowmup? 6)
A) 45.6% B)m80.8% C)m8.7% D)m19.2%
Answer:mD
Determinemifmthemfollowingmscenariomismanmobservationalmstudymormamcontrolledmexperiment.
7) Amdoctormisminterestedminmdeterminingmwhethermamcertainmmedicationmincreasesmthemriskmofmhig 7) m
hmbloodmpressure.mHemrandomlymselectsm100mpeoplemformhismstudym-
m50mwhomwillmtakemthemmedication,mandm50mwhom willmtakem amplacebo.m Hemchecksmthem patien
ts'm bloodm pressuresm weeklymform sixm months.
A) Observationalmstudy B)mNeither
C)mControlledmexperimentmAnswer:m C
Solvemthemproblem. 8) m
8) Themnumbermofmparentsmwhomattendedmparentmteachermconferencesmatmamlocalmelementarymsc
hoolmismanmexamplemofmwhatmtypemofmvariable?
A) Numericalmvariable B)mCategoricalmvariable
C)mNeithermAnswer:m A
2
, SHORTmANSWER.mWritemthemwordmormphrasemthatmbestmcompletesmeachmstatementmormanswersmthem
question.
Determinemifmthemfollowingmscenariomismanmobservationalmstudymormamcontrolledmexperimentmandmexplainmyourmreasoni
ng.
9) Amdoctormisminterestedminmdeterminingmwhethermamcertainmmedicationmismeffectivematmt 9) m
reatingmabdominalm pain.m Hem reviewsm hism patients'm medicalm recordsm andm findsm th
atm am highermproportionmofmpeoplemwhomtookmthemmedicationmfewermabdominalmpainm
symptomsmthanmthosemwhomdidmnotmtakemthemmedication.
Answer:mThismismanmobservationalmstudymbecausemthemdoctormdidmnotmrandomlymassign
mpatientsmintomgroups.mInstead,mhemsimplymlookedmatmmedicalmfiles.
MULTIPLEmCHOICE.m Choosemthemonemalternativemthatmbestmcompletesmthemstatementmormanswersmthemquest
ion.mSolvemthemproblem.
10) Amtwo-waymtablemismusefulmformdescribingmwhichmtypesmofmvariables? 10)m
A) Onemnumericalmvariable.
B) Twomcategoricalmvariables.
C) Onemnumericalmvariablemandmonemcategoricalmvariable.
D) Twomnumericalmvariable
s.mAnswer:m B
11) Themfollowingmdatamtablemismorganizedmusingmwhichm method? 11)m
Gender Age
Male 35
Female 42
Female 33
Male 37
Femalem 39m
A) Thismismstackedmdatambecausemeachmrowmrepresentsmonemperson.
B) Thismismunstackedmdatambecausemthemagesmaremseparatedmbymgroupsm(inmthismcase,mgender).
C) Thismismstackedmdatambecausem themagesmaremseparatedmbymgroupsm(inmthismcase,mgender).
D) Thismismunstackedmdatambecausemeachmrowmrepresentsmonemp
erson.mAnswer:m A
SHORTmANSWER.mWritemthemwordmormphrasemthatmbestmcompletesmeachmstatementmormanswersmthemquestion.
12) Accordingmtomthemfollowingmtwo- 12)m
waymtable,mwhymarempercentagesmmoremusefulmthanmcountsmtomcomparem them amountm
ofmmalesmandmfemalesmwhomeatmbreakfast?
Answer:mThemgroupmsizesmaremdifferent.mTheremarem55mmales,mbutmonlym45mfemales.
3
m
,MULTIPLEmCHOICE.
Choosemthemonemalternativemthatmbestmcompletesmthemstatementmormanswersmthemquestion.
Solvemthemproblem.
1) Inmamsamplemofm775mseniormcitizens,mapproximatelym67%msaidmthatmtheymhadmseenma 1) m
mtelevisionmcommercialm formlifeminsurance.m Aboutm howm manym seniorm citizensm ism
this?
A) Notmenoughminformationmavailable. B)m 519
C)m67 D)m256
Answer:m B
2) Amtwo-waymtablemcouldmbemusedmformwhichmofmthemfollowingmpairsmofmvariables? 2)m
A) Gendermandmage B)mAgemandmfavoritemclass
C)mGendermandmfavoritemclass
D)mAgemandmheig
htmAnswer:m C
Indicatemwhethermthemstudymdescribedmismanmobservationalmstudymormamcontrolledmexperiment.
3) "Peoplemwithmdiabetesmarematmhighermriskmformcertainmcancersmthanmthosemwithoutmthembl 3) m
oodmsugarmdisease,m suggestsm am newm studym basedm onm amtelephonem surveym ofmnearlym
400,000m adults."
A) Controlledmexperiment
B)mObservationalmstudymAnswer:m B
SHORTmANSWER.mWritemthemwordmormphrasemthatmbestmcompletesmeachmstatementmormanswersmthemquesti
on.
Answermthemquestion.
4) ThemnumbermofmclinicallymobesemmenminmStatemAmism156,261mandmthemnumbermofmclinica 4) m
llymobesemmenminmStatemBmism294,269.mSomeonemmakesmthemclaimmthatmthismismevidencem
thatmmenmexercisemmorem inm Statem A.m Whatm informationmism missingm thatm mightmcontr
adictmthismclaim?
Answer:m Wem needm tom knowm them totalm numberm ofm menm inm Statem Am andm Statem Bm so
m thatm amcomparisonmcanmbemmademofmthempercentagemofmthemmenminmeachmstate
mthatmaremclinicallymobese.mTheremcouldmbemammuchmhigherm malempopulationmin
mStatem BmthanmStatemA.mAlso,massumptionsmaboutmexercisemandmobesitymarembei
ngmmade.
1
,MULTIPLEmCHOICE.mChoosemthemonemalternativemthatmbestmcompletesmthemstatementmormanswersmthemq
uestion.
UsemthemdataminmTablem1Amtomanswerm themquestion.
Note:m1mismfemale,m0mismmale.
5) Supposemyoumwantedmtomknowmwhethermthemstudent'smcommutemdistancemwasmassociatedm 5) m
withmthemstudent'sm livingmsituation.m Usingm them datamtablemifm possible,mwhichmvariables
m wouldmyoum use?
A) UsemCommutemDistancem(Miles)mandmLivingmSituation.
B) Datamonmstudent'smlivingmsituationmaremnotmincludedminmthismstudy.
C) UsemCommutemDistancem(Miles)mandmCollegemUnitsmAcquired.
D) UsemCollegemUnitsmAcquiredmandmLivingmSituat
ion.mAnswer:m A
Inmamstudymofm1350melementarymschoolmchildren,m118moutm ofmthem615mgirlsminmthemstudymsaidmtheymwantmtombemamt
eacherm whenmtheymgrowmup.
6) Whatmpercentmofmgirlsmwantmtombemamteachermwhenmtheymgrowmup? 6)
A) 45.6% B)m80.8% C)m8.7% D)m19.2%
Answer:mD
Determinemifmthemfollowingmscenariomismanmobservationalmstudymormamcontrolledmexperiment.
7) Amdoctormisminterestedminmdeterminingmwhethermamcertainmmedicationmincreasesmthemriskmofmhig 7) m
hmbloodmpressure.mHemrandomlymselectsm100mpeoplemformhismstudym-
m50mwhomwillmtakemthemmedication,mandm50mwhom willmtakem amplacebo.m Hemchecksmthem patien
ts'm bloodm pressuresm weeklymform sixm months.
A) Observationalmstudy B)mNeither
C)mControlledmexperimentmAnswer:m C
Solvemthemproblem. 8) m
8) Themnumbermofmparentsmwhomattendedmparentmteachermconferencesmatmamlocalmelementarymsc
hoolmismanmexamplemofmwhatmtypemofmvariable?
A) Numericalmvariable B)mCategoricalmvariable
C)mNeithermAnswer:m A
2
, SHORTmANSWER.mWritemthemwordmormphrasemthatmbestmcompletesmeachmstatementmormanswersmthem
question.
Determinemifmthemfollowingmscenariomismanmobservationalmstudymormamcontrolledmexperimentmandmexplainmyourmreasoni
ng.
9) Amdoctormisminterestedminmdeterminingmwhethermamcertainmmedicationmismeffectivematmt 9) m
reatingmabdominalm pain.m Hem reviewsm hism patients'm medicalm recordsm andm findsm th
atm am highermproportionmofmpeoplemwhomtookmthemmedicationmfewermabdominalmpainm
symptomsmthanmthosemwhomdidmnotmtakemthemmedication.
Answer:mThismismanmobservationalmstudymbecausemthemdoctormdidmnotmrandomlymassign
mpatientsmintomgroups.mInstead,mhemsimplymlookedmatmmedicalmfiles.
MULTIPLEmCHOICE.m Choosemthemonemalternativemthatmbestmcompletesmthemstatementmormanswersmthemquest
ion.mSolvemthemproblem.
10) Amtwo-waymtablemismusefulmformdescribingmwhichmtypesmofmvariables? 10)m
A) Onemnumericalmvariable.
B) Twomcategoricalmvariables.
C) Onemnumericalmvariablemandmonemcategoricalmvariable.
D) Twomnumericalmvariable
s.mAnswer:m B
11) Themfollowingmdatamtablemismorganizedmusingmwhichm method? 11)m
Gender Age
Male 35
Female 42
Female 33
Male 37
Femalem 39m
A) Thismismstackedmdatambecausemeachmrowmrepresentsmonemperson.
B) Thismismunstackedmdatambecausemthemagesmaremseparatedmbymgroupsm(inmthismcase,mgender).
C) Thismismstackedmdatambecausem themagesmaremseparatedmbymgroupsm(inmthismcase,mgender).
D) Thismismunstackedmdatambecausemeachmrowmrepresentsmonemp
erson.mAnswer:m A
SHORTmANSWER.mWritemthemwordmormphrasemthatmbestmcompletesmeachmstatementmormanswersmthemquestion.
12) Accordingmtomthemfollowingmtwo- 12)m
waymtable,mwhymarempercentagesmmoremusefulmthanmcountsmtomcomparem them amountm
ofmmalesmandmfemalesmwhomeatmbreakfast?
Answer:mThemgroupmsizesmaremdifferent.mTheremarem55mmales,mbutmonlym45mfemales.
3
