Exam
Name___________________________________
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers
the question.
Solve the problem.
1) In da dsample dof d775 dsenior dcitizens, dapproximately d67% dsaid dthat dthey dhad dseen da dtelevision 1)
d commercial dfor dlife dinsurance. dAbout dhow dmany dsenior dcitizens dis dthis?
A) Not denough dinformation davailable. B) d519
C) d67 D) d256 dAnswer: dB
2) A dtwo- dway dtable dcould dbe dused dfor dwhich dof dthe dfollowing dpairs dof dvariables? 2)
A) Gender dand dage B) dAge dand dfavorite dclass
C) dGender dand dfavorite dclass dD) dAge dand dheight dAnswer: dC
Indicate dwhether dthe dstudy ddescribed dis dan dobservational dstudy dor da dcontrolled dexperiment.
3) "People dwith ddiabetes dare dat dhigher drisk dfor dcertain dcancers dthan dthose dwithout dthe dblood dsugar d3)
d disease, dsuggests da dnew dstudy dbased don da dtelephone dsurvey dof dnearly d400,000 dadults."
A) Controlled dexperiment dB) dObservational dstudy dAnswer: dB
SHORT dANSWER. d dWrite dthe dword dor dphrase dthat dbest dcompletes deach dstatement dor danswers dthe dquestion.
Answer dthe dquestion.
4) The dnumber dof dclinically dobese dmen din dState dA dis d156,261 dand dthe dnumber dof dclinically dobese 4)
d men din dState dB dis d294,269. dSomeone dmakes dthe dclaim dthat dthis dis devidence dthat dmen dexercise
more din dState dA. dWhat dinformation dis dmissing dthat dmight dcontradict dthis dclaim?
1
, Answer: dWe dneed dto dknow dthe dtotal dnumber dof dmen din dState dA dand dState dB dso dthat da
d comparison dcan dbe dmade dof dthe dpercentage dof dthe dmen din deach dstate dthat dare
d clinically dobese. dThere dcould dbe da dmuch dhigher dmale dpopulation din dState dB
d than dState dA. dAlso, dassumptions dabout dexercise dand dobesity dare dbeing dmade.
MULTIPLE dCHOICE. d dChoose dthe done dalternative dthat dbest dcompletes dthe dstatement dor danswers dthe dquestion.
Use dthe ddata din dTable d1A dto danswer dthe dquestion.
Note: d1 dis dfemale, d0 dis dmale.
5) Suppose dyou dwanted dto dknow dwhether dthe dstudent's dcommute ddistance dwas dassociated dwith dthe 5)
d student's dliving dsituation. d dUsing dthe ddata dtable dif dpossible, dwhich dvariables dwould dyou duse? dA) dUse
d Commute dDistance d(Miles) dand dLiving dSituation.
B) Data don dstudent's dliving dsituation dare dnot dincluded din dthis dstudy.
C) Use dCommute dDistance d(Miles) dand dCollege dUnits dAcquired.
2
, D) Use dCollege dUnits dAcquired dand dLiving dSituation.
Answer: dA
In da dstudy dof d1350 delementary dschool dchildren, d118 dout dof dthe d615 dgirls din dthe dstudy dsaid dthey dwant dto dbe da
dteacher dwhen
they dgrow dup.
6) What dpercent dof dgirls dwant dto dbe da dteacher dwhen dthey dgrow dup? 6)
A) 45.6% B) d80.8% C) d8.7% D) d19.2%
Answer: dD
Determine dif dthe dfollowing dscenario dis dan dobservational dstudy dor da dcontrolled dexperiment.
7) A ddoctor dis dinterested din ddetermining dwhether da dcertain dmedication dincreases dthe drisk dof dhigh dblood
7) dpressure. dHe drandomly dselects d100 dpeople dfor dhis dstudy d- d50 dwho dwill dtake dthe dmedication, dand
d 50 dwho dwill dtake da dplacebo. dHe dchecks dthe dpatients' dblood dpressures dweekly dfor dsix dmonths.
A) Observational dstudy dB) dNeither dC) dControlled dexperiment dAnswer: dC
Solve dthe dproblem.
8) The dnumber dof dparents dwho dattended dparent dteacher dconferences dat da dlocal delementary dschool dis dan
8) dexample dof dwhat dtype dof dvariable?
A) Numerical dvariable dB) dCategorical dvariable dC) dNeither dAnswer: dA
SHORT dANSWER. d dWrite dthe dword dor dphrase dthat dbest dcompletes deach dstatement dor danswers dthe dquestion.
Determine dif dthe dfollowing dscenario dis dan dobservational dstudy dor da dcontrolled dexperiment dand dexplain dyour
dreasoning.
9) A ddoctor dis dinterested din ddetermining dwhether da dcertain dmedication dis deffective dat dtreating 9) dabdominal
d pain. dHe dreviews dhis dpatients' dmedical drecords dand dfinds dthat da dhigher proportion
d of dpeople dwho dtook dthe dmedication dfewer dabdominal dpain dsymptoms dthan dthose dwho ddid dnot dtake dthe
d medication.
3
, Answer: dThis dis dan dobservational dstudy dbecause dthe ddoctor ddid dnot drandomly dassign
d patients dinto dgroups. dInstead, dhe dsimply dlooked dat dmedical dfiles.
MULTIPLE dCHOICE. d dChoose dthe done dalternative dthat dbest dcompletes dthe dstatement dor danswers dthe dquestion.
Solve dthe dproblem.
10) A dtwo- dway dtable dis duseful dfor ddescribing dwhich dtypes dof dvariables? 10)
A) One dnumerical dvariable.
B) Two dcategorical dvariables.
C) One dnumerical dvariable dand done dcategorical dvariable.
D) Two dnumerical dvariables.
Answer: dB
11) The following data table is organized using which method? 11)
Gender dAge
Male d35 dFemale
d 42
Female 33
Male 37
Female 39
A) This dis dstacked ddata dbecause deach drow drepresents done dperson.
B) This dis dunstacked ddata dbecause dthe dages dare dseparated dby dgroups d(in dthis dcase, dgender).
C) This dis dstacked ddata dbecause dthe dages dare dseparated dby dgroups d(in dthis dcase, dgender).
D) This dis dunstacked ddata dbecause deach drow drepresents done dperson.
Answer: dA
SHORT dANSWER. d dWrite dthe dword dor dphrase dthat dbest dcompletes deach dstatement dor danswers dthe dquestion.
12) According dto dthe dfollowing dtwo- dway dtable, dwhy dare dpercentages dmore duseful dthan dcounts dto 12)
d compare dthe damount dof dmales dand dfemales dwho deat dbreakfast?
Answer: dThe dgroup dsizes dare ddifferent. dThere dare d55 dmales, dbut donly d45 dfemales.
MULTIPLE dCHOICE. d dChoose dthe done dalternative dthat dbest dcompletes dthe dstatement dor danswers dthe dquestion.
13) A dbicycle dmanufacturer dproduces dfour ddifferent dbicycle dmodels. dInformation dis dsummarized din dthe 13)
d table dbelow:
Model d d Series d Style
d Weight
d Number
Ascension dddd A120 31
d Mountain
4
Name___________________________________
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers
the question.
Solve the problem.
1) In da dsample dof d775 dsenior dcitizens, dapproximately d67% dsaid dthat dthey dhad dseen da dtelevision 1)
d commercial dfor dlife dinsurance. dAbout dhow dmany dsenior dcitizens dis dthis?
A) Not denough dinformation davailable. B) d519
C) d67 D) d256 dAnswer: dB
2) A dtwo- dway dtable dcould dbe dused dfor dwhich dof dthe dfollowing dpairs dof dvariables? 2)
A) Gender dand dage B) dAge dand dfavorite dclass
C) dGender dand dfavorite dclass dD) dAge dand dheight dAnswer: dC
Indicate dwhether dthe dstudy ddescribed dis dan dobservational dstudy dor da dcontrolled dexperiment.
3) "People dwith ddiabetes dare dat dhigher drisk dfor dcertain dcancers dthan dthose dwithout dthe dblood dsugar d3)
d disease, dsuggests da dnew dstudy dbased don da dtelephone dsurvey dof dnearly d400,000 dadults."
A) Controlled dexperiment dB) dObservational dstudy dAnswer: dB
SHORT dANSWER. d dWrite dthe dword dor dphrase dthat dbest dcompletes deach dstatement dor danswers dthe dquestion.
Answer dthe dquestion.
4) The dnumber dof dclinically dobese dmen din dState dA dis d156,261 dand dthe dnumber dof dclinically dobese 4)
d men din dState dB dis d294,269. dSomeone dmakes dthe dclaim dthat dthis dis devidence dthat dmen dexercise
more din dState dA. dWhat dinformation dis dmissing dthat dmight dcontradict dthis dclaim?
1
, Answer: dWe dneed dto dknow dthe dtotal dnumber dof dmen din dState dA dand dState dB dso dthat da
d comparison dcan dbe dmade dof dthe dpercentage dof dthe dmen din deach dstate dthat dare
d clinically dobese. dThere dcould dbe da dmuch dhigher dmale dpopulation din dState dB
d than dState dA. dAlso, dassumptions dabout dexercise dand dobesity dare dbeing dmade.
MULTIPLE dCHOICE. d dChoose dthe done dalternative dthat dbest dcompletes dthe dstatement dor danswers dthe dquestion.
Use dthe ddata din dTable d1A dto danswer dthe dquestion.
Note: d1 dis dfemale, d0 dis dmale.
5) Suppose dyou dwanted dto dknow dwhether dthe dstudent's dcommute ddistance dwas dassociated dwith dthe 5)
d student's dliving dsituation. d dUsing dthe ddata dtable dif dpossible, dwhich dvariables dwould dyou duse? dA) dUse
d Commute dDistance d(Miles) dand dLiving dSituation.
B) Data don dstudent's dliving dsituation dare dnot dincluded din dthis dstudy.
C) Use dCommute dDistance d(Miles) dand dCollege dUnits dAcquired.
2
, D) Use dCollege dUnits dAcquired dand dLiving dSituation.
Answer: dA
In da dstudy dof d1350 delementary dschool dchildren, d118 dout dof dthe d615 dgirls din dthe dstudy dsaid dthey dwant dto dbe da
dteacher dwhen
they dgrow dup.
6) What dpercent dof dgirls dwant dto dbe da dteacher dwhen dthey dgrow dup? 6)
A) 45.6% B) d80.8% C) d8.7% D) d19.2%
Answer: dD
Determine dif dthe dfollowing dscenario dis dan dobservational dstudy dor da dcontrolled dexperiment.
7) A ddoctor dis dinterested din ddetermining dwhether da dcertain dmedication dincreases dthe drisk dof dhigh dblood
7) dpressure. dHe drandomly dselects d100 dpeople dfor dhis dstudy d- d50 dwho dwill dtake dthe dmedication, dand
d 50 dwho dwill dtake da dplacebo. dHe dchecks dthe dpatients' dblood dpressures dweekly dfor dsix dmonths.
A) Observational dstudy dB) dNeither dC) dControlled dexperiment dAnswer: dC
Solve dthe dproblem.
8) The dnumber dof dparents dwho dattended dparent dteacher dconferences dat da dlocal delementary dschool dis dan
8) dexample dof dwhat dtype dof dvariable?
A) Numerical dvariable dB) dCategorical dvariable dC) dNeither dAnswer: dA
SHORT dANSWER. d dWrite dthe dword dor dphrase dthat dbest dcompletes deach dstatement dor danswers dthe dquestion.
Determine dif dthe dfollowing dscenario dis dan dobservational dstudy dor da dcontrolled dexperiment dand dexplain dyour
dreasoning.
9) A ddoctor dis dinterested din ddetermining dwhether da dcertain dmedication dis deffective dat dtreating 9) dabdominal
d pain. dHe dreviews dhis dpatients' dmedical drecords dand dfinds dthat da dhigher proportion
d of dpeople dwho dtook dthe dmedication dfewer dabdominal dpain dsymptoms dthan dthose dwho ddid dnot dtake dthe
d medication.
3
, Answer: dThis dis dan dobservational dstudy dbecause dthe ddoctor ddid dnot drandomly dassign
d patients dinto dgroups. dInstead, dhe dsimply dlooked dat dmedical dfiles.
MULTIPLE dCHOICE. d dChoose dthe done dalternative dthat dbest dcompletes dthe dstatement dor danswers dthe dquestion.
Solve dthe dproblem.
10) A dtwo- dway dtable dis duseful dfor ddescribing dwhich dtypes dof dvariables? 10)
A) One dnumerical dvariable.
B) Two dcategorical dvariables.
C) One dnumerical dvariable dand done dcategorical dvariable.
D) Two dnumerical dvariables.
Answer: dB
11) The following data table is organized using which method? 11)
Gender dAge
Male d35 dFemale
d 42
Female 33
Male 37
Female 39
A) This dis dstacked ddata dbecause deach drow drepresents done dperson.
B) This dis dunstacked ddata dbecause dthe dages dare dseparated dby dgroups d(in dthis dcase, dgender).
C) This dis dstacked ddata dbecause dthe dages dare dseparated dby dgroups d(in dthis dcase, dgender).
D) This dis dunstacked ddata dbecause deach drow drepresents done dperson.
Answer: dA
SHORT dANSWER. d dWrite dthe dword dor dphrase dthat dbest dcompletes deach dstatement dor danswers dthe dquestion.
12) According dto dthe dfollowing dtwo- dway dtable, dwhy dare dpercentages dmore duseful dthan dcounts dto 12)
d compare dthe damount dof dmales dand dfemales dwho deat dbreakfast?
Answer: dThe dgroup dsizes dare ddifferent. dThere dare d55 dmales, dbut donly d45 dfemales.
MULTIPLE dCHOICE. d dChoose dthe done dalternative dthat dbest dcompletes dthe dstatement dor danswers dthe dquestion.
13) A dbicycle dmanufacturer dproduces dfour ddifferent dbicycle dmodels. dInformation dis dsummarized din dthe 13)
d table dbelow:
Model d d Series d Style
d Weight
d Number
Ascension dddd A120 31
d Mountain
4
