Solution Manual for Essentials of Statistics for Business & Economics 9th Edition Anderson – Complete Answers (Chapters 1-15).

SOLUTIONV MANUALV FOR
EssentialsVofVStatisticsVforVBusinessV&VEconomicsV9thVEditionVbyVDavid
VR.VAnderson,VDennisVJ.VSweeney,VThomasVA.VWilliams,VJeffreyVD.VCa

mm,VJamesVJ.VCochran

ChapterV1

DataVandVStatistics


LearningVObjectives

1. ObtainVanVappreciationVforVtheVbreadthVofVstatisticalVapplicationsVinVbusine

ssVandVeconomics.

2. UnderstandVtheVmeaningVofVtheVtermsVelements,Vvariables,VandVobservationsVasVth

eyVareVusedVinVstatistics.

3. ObtainVanVunderstandingVofVtheVdifferenceVbetweenVcategorical,Vquantitative,Vc

ross-Vsectional,VandVtime-seriesVdata.

4. LearnVaboutVtheVsourcesVofVdataVforVstatisticalVanalysisVbothVinternalVandVexterna

lVtoVtheVfirm.

5. BeVawareVofVhowVerrorsVcanVariseVinVdata.

6. KnowVtheVmeaningVofVdescriptiveVstatisticsVandVstatisticalVinference.

7. BeVableVtoVdistinguishVbetweenVaVpopulationVandVaVsample.

8. UnderstandVtheVroleVaVsampleVplaysVinVmakingVstatisticalVinferencesVaboutVtheVpopulatio
n.

9. KnowVtheVmeaningVofVtheVtermVdataVmining.

10. BeVawareVofVethicalVguidelinesVforVstatisticalVpractice.


Solutions:

1. StatisticsVcanVbeVreferredVtoVasVnumericalVfacts.VInVaVbroaderVsense,VstatisticsVisVtheVfiel
dVof
©V2019VCengageVLearning.VAllVRightsVReserved.VMayVnotVbeVscanned,VcopiedVorVduplicated,VorVpostedVtoVaVpubliclyVaccessibleVwe
bsite,VinVwholeVorVinVpart.

, studyVdealingVwithVtheVcollection,Vanalysis,VpresentationVandVinterpretationVofVdata.

2. a.V V TheV10VelementsVareVtheV10VtabletVcomputers

b. FiveV variables:VCostV($),VOperatingVSystem,VDisplayVSizeV(inches),VBattery

VLifeV(hours),VandVCPUVManufacturer


c CategoricalVvariables: OperatingVSystemVandVCPUVManufacturer

QuantitativeVvariables: CostV($),VDisplayVSizeV(inches),VandVBatteryVLifeV(hours)

d.

Variable MeasurementVScale

CostV($) Ratio

OperatingVsystem Nominal

DisplayVsizeV(inches) Ratio

BatteryVlifeV(hours) Ratio

CPUVmanufacturer Nominal

3. a.V V AverageVcostV=V5829/10V=V$582.90

b. AverageVcostVwithVaVWindowsVoperatingVsystemV=V3616/5V=V$7

23.20VAverageVcostVwithVanVAndroidVoperatingVsystemV=V1,714/

4V=V$428.5VTheVaverageVcostVwithVaVWindowsVoperatingVsyste

mVisVmuchVhigher.

c. TenVofV10VorV20%VuseVaVCPUVmanufacturedVbyVTIVOMAP

d. FourVofV10VorV40%VuseVanVAndroidVoperatingVsystem

4. a.V ThereVareVeightVelementsVinVthisVdataVset;VeachVelementVcorrespondsVtoVoneVofV

theVeightVmodelsVofVcordlessVtelephones.

b. CategoricalVvariables:VVoiceVQualityVandVHandsetVonVBase

©V2019VCengageVLearning.VAllVRightsVReserved.VMayVnotVbeVscanned,VcopiedVorVduplicated,VorVpostedVtoVaVpubliclyVaccessibleVwe
bsite,VinVwholeVorVinVpart.

, QuantitativeVvariables:VPrice,VOverallVScore,VandVTalkVTime

c. Price:VratioVmeasurement

OverallVscore:VintervalVmeasurementVV

oiceVquality:VordinalVmeasurementVHan

dsetVonVbase:VnominalVmeasurementVTal

kVtime:VratioVmeasurement

5. a.V V AverageVpriceV=V545/8V=V$68.13

b. AverageVtalkVtimeV=V71/8V=V8.875Vhours

c. PercentageVratedVExcellent: 2VofV8,V2/8V=V.25,VorV25%

6. a.V V Categorical

b. Quantitative

c. Categorical

d. Quantitative

e. Quantitative

7. a.V V BecauseVthereVareVfiveVchoices,VtheVresponseVisVaVcategoricalVresponse.

b. TheVfiveVresponsesVareVtheVlabelsVforVtheVcustomerVresponses.VAVnominalVscaleVi

sVbeingVused.

8. a.V V 762

b. Categorical

c. Percentages

d. .67(762)V=V510.54

510VorV511VrespondentsVsaidVtheyVwantVtheVamendmentVtoVpass.

9. a.V V TheVpopulationVisVemployedVindividualsVinVtheVUnitedVStatesVagedV25–29.




©V2019VCengageVLearning.VAllVRightsVReserved.VMayVnotVbeVscanned,VcopiedVorVduplicated,VorVpostedVtoVaVpubliclyVaccessibleVwe
bsite,VinVwholeVorVinVpart.

, b. HaveVyouVearnedVaVbachelor’sVdegreeV(orVhigher)?

c. BecauseVtheVresponseVisVyesVorVno,VtheVresponseVisVcategorical.

10. a.V V Categorical

b. Percentages

c. 44VofV1080Vrespondents,VapproximatelyV4%,VstronglyVagreeVwithVallowingVdriv

ersVofVmotorVvehiclesVtoVtalkVonVaVhand-heldVcellVphoneVwhileVdriving.

d. 165VofVtheV1,080VrespondentsVorV15%VofVsaidVtheyVsomewhatVdisagreeVandV741

VorV69%VsaidVtheyVstronglyVdisagree.VThus,VthereVdoesVnotVappearVtoVbeVgenera


lVsupportVforVallowingVdriversVofVmotorVvehiclesVtoVtalkVonVaVhand-

heldVcellVphoneVwhileVdriving.

11. a.V V SinceVtheseVareVyears,Vcategorical.

b. .53(1,503)V=V796.59VorVapproximatelyV797

c. .10(1,503)V=V150.3VorVapproximatelyV150

12. a.V V TheVpopulationVisVallVvisitorsVcomingVtoVtheVstateVofVHawaii.

b. BecauseVairlineVflightsVcarryVtheVvastVmajorityVofVvisitorsVtoVtheVstate,VtheVuseVo

fVquestionnairesVforVpassengersVduringVincomingVflightsVisVaVgoodVwayVtoVreach

VthisVpopulation.VTheVquestionnaireVactuallyVappearsVonVtheVbackVofVaVmandator


yVplantsVandVanimalsVdeclarationVformVthatVpassengersVmustVcompleteVduringVthe

VincomingVflight.VAVlargeVpercentageVofVpassengersVcompleteVtheVvisitorVinforma


tionVquestionnaire.

c. QuestionsV1VandV4VprovideVquantitativeVdataVindicatingVtheVnumberVofVvisitsVa

ndVtheVnumberVofVdaysVinVHawaii.VQuestionsV2VandV3VprovideVcategoricalVdata

VindicatingVtheVcategoriesVofVreasonVforVtheVtripVandVwhereVtheVvisitorVplansVt


oVstay.

13. a.V V FacebookVworldwideVadvertisingVrevenue.
©V2019VCengageVLearning.VAllVRightsVReserved.VMayVnotVbeVscanned,VcopiedVorVduplicated,VorVpostedVtoVaVpubliclyVaccessibleVwe
bsite,VinVwholeVorVinVpart.