chap01TIFBSAFC5.docx

chap01TIFBSAFC5.docx

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chap01TIFBSAFC5

CHAPTER1:

INTRODUCTIONANDDATACOLLECTION

1.Theprocessofusingsamplestatisticstodrawconclusionsabouttruepopulationparametersiscalled

a）statisticalinference.

b）thescientificmethod.

c）sampling.

d）descriptivestatistics.

ANSWER:

a

TYPE:

MCDIFFICULTY:

Easy

KEYWORDS:

inferentialstatistics

2.Thosemethodsinvolvingthecollection,presentation,andcharacterizationofasetofdatainordertoproperlydescribethevariousfeaturesofthatsetofdataarecalled

a）statisticalinference.

b）thescientificmethod.

c）sampling.

d）descriptivestatistics.

ANSWER:

d

TYPE:

MCDIFFICULTY:

Easy

KEYWORDS:

descriptivestatistics

3.Thecollectionandsummarizationofthesocioeconomicandphysicalcharacteristicsoftheemployeesofaparticularfirmisanexampleof

a）inferentialstatistics.

b）descriptivestatistics.

c）aparameter.

d）astatistic.

ANSWER:

b

TYPE:

MCDIFFICULTY:

Easy

KEYWORDS:

descriptivestatistics

4.Theestimationofthepopulationaveragefamilyexpenditureonfoodbasedonthesampleaverageexpenditureof1,000familiesisanexampleof

a）inferentialstatistics.

b）descriptivestatistics.

c）aparameter.

d）astatistic.

ANSWER:

a

TYPE:

MCDIFFICULTY:

Easy

KEYWORDS:

inferentialstatistics

5.

Theuniverseor"totalityofitemsorthings"underconsiderationiscalled

a）asample.

b）apopulation.

c）aparameter.

d）astatistic.

ANSWER:

b

TYPE:

MCDIFFICULTY:

Easy

KEYWORDS:

population

6.Theportionoftheuniversethathasbeenselectedforanalysisiscalled

a）asample.

b）aframe.

c）aparameter.

d）astatistic.

ANSWER:

a

TYPE:

MCDIFFICULTY:

Easy

KEYWORDS:

sample

7.Asummarymeasurethatiscomputedtodescribeacharacteristicfromonlyasampleofthepopulationiscalled

a）aparameter.

b）acensus.

c）astatistic.

d）thescientificmethod.

ANSWER:

c

TYPE:

MCDIFFICULTY:

Easy

KEYWORDS:

statistic

8.Asummarymeasurethatiscomputedtodescribeacharacteristicofanentirepopulationiscalled

a）aparameter.

b）acensus.

c）astatistic.

d）thescientificmethod.

ANSWER:

a

TYPE:

MCDIFFICULTY:

Easy

KEYWORDS:

parameter

9.Whichofthefollowingismostlikelyapopulationasopposedtoasample?

a）respondentstoanewspapersurvey.

b）thefirst5studentscompletinganassignment.

c）everythirdpersontoarriveatthebank.

d）registeredvotersinacounty.

ANSWER:

d

TYPE:

MCDIFFICULTY:

Moderate

KEYWORDS:

population,sample

10.Whichofthefollowingismostlikelyaparameterasopposedtoastatistic?

a）Theaveragescoreofthefirstfivestudentscompletinganassignment.

b）Theproportionoffemalesregisteredtovoteinacounty.

c）Theaverageheightofpeoplerandomlyselectedfromadatabase.

d）Theproportionoftrucksstoppedyesterdaythatwerecitedforbadbrakes.

ANSWER:

b

TYPE:

MCDIFFICULTY:

Moderate

KEYWORDS:

parameter,statistic

11.Whichofthefollowingisnotanelementofdescriptivestatisticalproblems?

a）Aninferencemadeaboutthepopulationbasedonthesample.

b）Thepopulationorsampleofinterest.

c）Tables,graphs,ornumericalsummarytools.

d）Identificationofpatternsinthedata.

ANSWER:

a

TYPE:

MCDIFFICULTY:

Moderate

KEYWORDS:

descriptivestatistics

12.AstudyisunderwayinYosemiteNationalForesttodeterminetheadultheightofAmericanpinetrees.Specifically,thestudyisattemptingtodeterminewhatfactorsaidatreeinreachingheightsgreaterthan60feettall.Itisestimatedthattheforestcontains25,000adultAmericanpines.Thestudyinvolvescollectingheightsfrom250randomlyselectedadultAmericanpinetreesandanalyzingtheresults.Identifythepopulationfromwhichthestudywassampled.

a）The250randomlyselectedadultAmericanpinetrees.

b）The25,000adultAmericanpinetreesintheforest.

c）AlltheadultAmericanpinetreestallerthan60feet.

d）AllAmericanpinetrees,ofanyage,intheforest.

ANSWER:

b

TYPE:

MCDIFFICULTY:

Moderate

KEYWORDS:

population,sample

13.AstudyisunderwayinYosemiteNationalForesttodeterminetheadultheightofAmericanpinetrees.Specifically,thestudyisattemptingtodeterminewhatfactorsaidatreeinreachingheightsgreaterthan60feettall.Itisestimatedthattheforestcontains25,000adultAmericanpines.Thestudyinvolvescollectingheightsfrom250randomlyselectedadultAmericanpinetreesandanalyzingtheresults.Identifythevariableofinterestinthestudy.

a）TheageofanAmericanpinetreeinYosemiteNationalForest.

b）TheheightofanAmericanpinetreeinYosemiteNationalForest.

c）ThenumberofAmericanpinetreesinYosemiteNationalForest.

d）ThespeciesoftreesinYosemiteNationalForest.

ANSWER:

b

TYPE:

MCDIFFICULTY:

Easy

KEYWORDS:

data,sampling

14.AstudyisunderwayinYosemiteNationalForesttodeterminetheadultheightofAmericanpinetrees.Specifically,thestudyisattemptingtodeterminewhatfactorsaidatreeinreachingheightsgreaterthan60feettall.Itisestimatedthattheforestcontains25,000adultAmericanpines.Thestudyinvolvescollectingheightsfrom250randomlyselectedadultAmericanpinetreesandanalyzingtheresults.Identifythesampleinthestudy.

a）The250randomlyselectedadultAmericanpinetrees.

b）The25,000adultAmericanpinetreesintheforest.

c）AlltheadultAmericanpinetreestallerthan60feet.

d）AllAmericanpinetrees,ofanyage,intheforest.

ANSWER:

a

TYPE:

MCDIFFICULTY:

Easy

KEYWORDS:

population,sample

15.Mostanalystsfocusonthecostoftuitionasthewaytomeasurethecostofacollegeeducation.Butincidentals,suchastextbookcosts,arerarelyconsidered.AresearcheratDrummandUniversitywishestoestimatethetextbookcostsoffirst-yearstudentsatDrummand.Todoso,shemonitoredthetextbookcostof250first-yearstudentsandfoundthattheiraveragetextbookcostwas$300persemester.Identifythepopulationofinteresttotheresearcher.

a）AllDrummandUniversitystudents.

b）Allcollegestudents.

c）Allfirst-yearDrummandUniversitystudents.

d）The250studentsthatweremonitored.

ANSWER:

c

TYPE:

MCDIFFICULTY:

Easy

KEYWORDS:

population,sample

16.Mostanalystsfocusonthecostoftuitionasthewaytomeasurethecostofacollegeeducation.Butincidentals,suchastextbookcosts,arerarelyconsidered.AresearcheratDrummandUniversitywishestoestimatethetextbookcostsoffirst-yearstudentsatDrummand.Todoso,shemonitoredthetextbookcostof250first-yearstudentsandfoundthattheiraveragetextbookcostwas$300persemester.Identifythevariableofinteresttotheresearcher.

a）Thetextbookcostoffirst-yearDrummandUniversitystudents.

b）TheyearinschoolofDrummandUniversitystudents.

c）TheageofDrummandUniversitystudents.

d）ThecostofincidentalexpensesofDrummandUniversitystudents.

ANSWER:

a

TYPE:

MCDIFFICULTY:

Easy

KEYWORDS:

data,sampling

17.Mostanalystsfocusonthecostoftuitionasthewaytomeasurethecostofacollegeeducation.Butincidentals,suchastextbookcosts,arerarelyconsidered.AresearcheratDrummandUniversitywishestoestimatethetextbookcostsoffirst-yearstudentsatDrummand.Todoso,shemonitoredthetextbookcostof250first-yearstudentsandfoundthattheiraveragetextbookcostwas$300persemester.Identifythesampleinthestudy.

a）AllDrummandUniversitystudents.

b）Allcollegestudents.

c）Allfirst-yearDrummandUniversitystudents.

d）The250studentsthatweremonitored.

ANSWER:

d

TYPE:

MCDIFFICULTY:

Easy

KEYWORDS:

population,sample

18.Researcherssuspectthattheaveragenumberofunitsearnedpersemesterbycollegestudentsisrising.AresearcheratCalendulaCollegewishestoestimatethenumberofunitsearnedbystudentsduringthespringsemesteratCalendula.Todoso,herandomlyselects100studenttranscriptsandrecordsthenumberofunitseachstudentearnedinthespringterm.Hefoundthattheaveragenumberofsemesterunitscompletedwas12.96unitsperstudent.Identifythepopulationofinteresttotheresearcher.

a）AllCalendulaCollegestudents.

b）Allcollegestudents.

c）AllCalendulaCollegestudentsenrolledinthespring.

d）Allcollegestudentsenrolledinthespring.

ANSWER:

c

TYPE:

MCDIFFICULTY:

Moderate

KEYWORDS:

population,sample

19.Theaveragenumberofunitsearnedpersemesterbycollegestudentsissuspectedtoberising.AresearcheratCalendulaCollegewishestoestimatethenumberofunitsearnedbystudentsduringthespringsemesteratCalendula.Todoso,herandomlyselects100studenttranscriptsandrecordsthenumberofunitseachstudentearnedinthespringterm.Identifythevariableofinteresttotheresearcher.

a）ThenumberofstudentsenrolledatCalendulaCollegeduringthespringterm.

b）TheaverageindebtednessofCalendulaCollegestudentsenrolledinthespring.

c）TheageofCalendulaCollegestudentsenrolledinthespring.

d）ThenumberofunitsearnedbyCalendulaCollegestudentsduringthespringterm.

ANSWER:

d

TYPE:

MCDIFFICULTY:

Easy

KEYWORDS:

data,sampling

20.JaredwasworkingonaprojecttolookatglobalwarmingandaccessedanInternetsitewherehecapturedaverageglobalsurfacetemperaturesfrom1866.Whichofthefourmethodsofdatacollectionwasheusing?

a）Publishedsources

b）Experimentation

c）Surveying

d）Observation

ANSWER:

a

TYPE:

MCDIFFICULTY:

Easy

KEYWORDS:

sourcesofdata

21.TheBritishAirwaysInternetsiteprovidesaquestionnaireinstrumentthatcanbeansweredelectronically.Whichofthe4methodsofdatacollectionisinvolvedwhenpeoplecompletethequestionnaire?

a）Publishedsources

b）Experimentation

c）Surveying

d）Observation

ANSWER:

c

TYPE:

MCDIFFICULTY:

Easy

KEYWORDS:

sourcesofdata

22.Amarketingresearchfirm,inconductingacomparativetastetest,provide