chap01商务统计学.docx
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chap01商务统计学.docx
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chap01商务统计学
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,providedth
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