business statistics for contemporary decision making 7thedition by black test bank

,File:wch01,wChapterw1:wIntroductionwtowStatistics


True/False



1. Virtuallywallwareaswofwbusinesswusewstatisticswinwdecisionwmaking.

Ans:wTrue
Response:wSeewsectionw1.1,wStatisticswinwBusinesswDiff
iculty:wEasy
LearningwObjective:w1.1:wListwquantitativewandwgraphicalwexampleswofwstatisticswwithinwawbusiness
context.



2. Thewcompletewcollectionwofwallwentitieswunderwstudywiswcalledwthewsample.

Ans:wFalse
Response:wSeewsectionw1.2,wBasicwStatisticalwConcepts
wDifficulty: wEasy

LearningwObjective:w1.2:w definewimportantwstatisticalwterms,wincludingwpopulation,wsample,wand
parameter,waswtheywrelatewtowdescriptivewandwinferentialwstatistics.



3. Awportionworwsubsetwofwthewentitieswunderwstudywiswcalledwthewstatistic.

Ans:wFalse
Response:wSeewsectionw1.2,wBasicwStatisticalwConcepts
wDifficulty: wEasy

LearningwObjective:w1.2:w definewimportantwstatisticalwterms,wincludingwpopulation,wsample,wand
parameter,waswtheywrelatewtowdescriptivewandwinferentialwstatistics.



4. Awdescriptivewmeasurewofwthewpopulationwiswcalledwawparameter.

Ans:wTrue
Response:wSeewsectionw1.2,wBasicwStatisticalwConcepts
wDifficulty: wEasy

LearningwObjective:w1.2:w definewimportantwstatisticalwterms,wincludingwpopulation,wsample,wand
parameter,waswtheywrelatewtowdescriptivewandwinferentialwstatistics.

,5. Awcensuswiswthewprocesswofwgatheringwdatawonwallwthewentitieswinwthewpopulation.

Ans:wTrue
Response:wSeewsectionw1.2,wBasicwStatisticalwConcepts
wDifficulty: wEasy

LearningwObjective:w1.2:w definewimportantwstatisticalwterms,wincludingwpopulation,wsample,wand
parameter,waswtheywrelatewtowdescriptivewandwinferentialwstatistics.



6. Statisticswiswcommonlywdividedwintowtwowbrancheswcalledwdescriptivewstatisticswandwsumm
arywstatistics.

Ans:wFalse
Response:wSeewsectionw1.2,wBasicwStatisticalwConcepts
wDifficulty: wEasy

LearningwObjective:w1.2:w definewimportantwstatisticalwterms,wincludingwpopulation,wsample,wand
parameter,waswtheywrelatewtowdescriptivewandwinferentialwstatistics.



7. Awdescriptivewmeasurewofwthewsamplewiswcalledwawstatistic.

Ans:wTrue
Response:wSeewsectionw1.2,wBasicwStatisticalwConcepts
wDifficulty: wEasy

LearningwObjective:w1.2:w definewimportantwstatisticalwterms,wincludingwpopulation,wsample,wand
parameter,waswtheywrelatewtowdescriptivewandwinferentialwstatistics.



8. Gatheringwdatawfromwawsamplewtowreachwconclusionswaboutwthewpopulationwfromwwhichw
thewsamplewwaswdrawnwiswcalledwdescriptivewstatistics.

Ans:wFalse
Response:wSeewsectionw1.2,wBasicwStatisticalwConcepts
wDifficulty: wMedium

LearningwObjective:w1.2:w definewimportantwstatisticalwterms,wincludingwpopulation,wsample,wand
parameter,waswtheywrelatewtowdescriptivewandwinferentialwstatistics.

, 9. Calculationwofwpopulationwparameterswiswusuallyweitherwimpossibleworwexcessivelywti
mewconsumingwandwcostly.

Ans:wTrue
Response:wSeewsectionw1.2,wBasicwStatisticalwConcepts
wDifficulty: wEasy

LearningwObjective:w1.2:w definewimportantwstatisticalwterms,wincludingwpopulation,wsample,wand
parameter,waswtheywrelatewtowdescriptivewandwinferentialwstatistics.



10. Thewbasiswforwinferentialwstatisticswiswthewabilitywtowmakewdecisionswaboutwpopulationwparamet
erswwithoutwhavingwtowcompletewawcensuswofwthewpopulation.

Ans:wTrue
Response:wSeewsectionw1.2,wBasicwStatisticalwConcepts
wDifficulty: wEasy

LearningwObjective:w1.2:w definewimportantwstatisticalwterms,wincludingwpopulation,wsample,wand
parameter,waswtheywrelatewtowdescriptivewandwinferentialwstatistics.




11. Allwnumericalwdatawmustwbewanalyzedwstatisticallywinwthewsamewwaywbecausewallwofwthem
warewrepresentedwbywnumbers.




Ans:wFalse
Response:wSeewsectionw1.4,wDatawMeasurementwDiffic
ulty:wMedium
LearningwObjective:w1.4:wComparewthewfourwdifferentwlevelswofwdata:wnominal,wordinal,winterval,wa
nd
ratio.



12. Thewmannerwinwwhichwnumericalwdatawcanwbewanalyzedwstatisticallywdependswonwthewlevelwofw
datawmeasurementwrepresentedwbywnumberswbeingwanalyzed.

Ans:wTrue
Response:wSeewsectionw1.4,wDatawMeasurementwDiffic
ulty:wMedium
LearningwObjective:w1.4:wComparewthewfourwdifferentwlevelswofwdata:wnominal,wordinal,winterval,wa
nd
ratio.