《Business statistic》复习参考第一章至第八章复习课程.docx

《Business statistic》复习参考第一章至第八章复习课程.docx

《《Business statistic》复习参考第一章至第八章复习课程.docx》由会员分享，可在线阅读，更多相关《《Business statistic》复习参考第一章至第八章复习课程.docx（21页珍藏版）》请在冰豆网上搜索。

《Businessstatistic》复习参考第一章至第八章复习课程

《BusinessStatistic》

中国人民大学出版社英文版第五版

chapter1~8复习参考

Part1名词解释

1、Statisticsisamethodofextractingusefulinformationfromasetofnumericaldatainordertomakeamoreeffectiveandinformeddecision.

2、DescriptiveStatistics：

Thesearestatisticalmethodsoforganizing,summarizingandpresentingnumericaldatainconvenientformssuchasgraphs,chartsandtables.

3、Inferentialstatisticsisdefinedasstatisticalmethodsusedfordrawingconclusionsaboutapopulationbasedonsamples.

4、Primarydataisobtainedfirsthand.

5、Secondarydataalreadyexistsorhasbeenpreviouslycollectedsuchascompanyaccounts,orsalesfigures.

6、Mean:

Thearithmeticaverageandthemostcommonmeasureofaaaaaaacentraltendency.①Allvaluesareincludedincomputingthemean.②Asetofdatahasauniquemean③Themeanisaffectedbyunusuallylargeorsmalldatapoints（outliers/extremevalues）.

7、Mode:

Themostfrequentdata,ordatacorrespondingtothehighestfrequency.①Modeisnotaffectedbyextremevalues.②Theremaynotbeamode.③Theremaybeseveralmodes.④Usedforeithernumericalorcategoricaldata.

8、Medianisthevaluethatsplitsarankedsetofdataintotwoequalparts.①Medianisnotaffectedbyextremelylargeorsmallvaluesandisthereforeavaluablemeasureofcentraltendencywhensuchvaluesoccur.

9、StandardDeviation:

①Ameasureofthevariationofdatafromthemean.②Themostcommonlyusedmeasureofvariation.③Representedbythesymbol‘s’.④Showshowthedataisdistributedaroundthemean.

10、Probabilityisthechanceofanoccurrenceofanevent.①Probabilityofaneventalwaysliesbetween0and1.②Thesumoftheprobabilitiesofeverypossibleoutcomeoreventis1.③TheprobabilityofthecomplementA’isgivenby1-P（A）.

11、PropertiesofNormaldistribution：

①Continuousrandomvariable.②‘Bell-shaped’&symmetrical.③Mean,median,modeareequal④Areaunderthecurveis1.

12、TheCentralLimitedTheorem：

①Ifthepopulationfollowednormaldistribution,thesamplingdistributionofmeanisfollowednormaldistribution.②Ifthepopulationdonotfollowednormaldistribution,butthesamplesizeislargerthan30,thesamplingdistributionofmeanisfollowednormaldistribution.

Part2选择题

Topic1-IntroductiontoBusinessStatistics&DataCollection

Q1.Theuniverseortotalityofitemsorthingsunderconsiderationiscalled:

a.asample.

b.apopulation.

c.aparameter.

d.noneoftheabove.

Q2.Thosemethodsinvolvingthecollection,presentation,andcharacterizationofasetofdatainordertoproperlydescribethevariousfeaturesofthatsetofdataarecalled:

a.inferentialstatistics.

b.totalqualitymanagement.

c.sampling.

d.descriptivestatistics.

Q3.Theportionoftheuniversethathasbeenselectedforanalysisiscalled:

a.asample.

b.aframe.

c.aparameter.

d.astatistic.

Q4.Asummarymeasurethatiscomputedtodescribeanumericalcharacteristicfromonlyasampleofthepopulationiscalled:

a.aparameter.

b.acensus.

c.astatistic.

d.thescientificmethod.

Q5.Asummarymeasurethatiscomputedtodescribeacharacteristicofanentirepopulationiscalled:

a.aparameter.

b.acensus.

c.astatistic.

d.totalqualitymanagement.

Q6.Theprocessofusingsamplestatisticstodrawconclusionsaboutpopulationparametersiscalled:

a.inferentialstatistics.

b.experimentation.

c.primarysources.

d.descriptivestatistics.

Q7.Whichofthefourmethodsofdatacollectionisinvolvedwhenapersonretrievesdatafromanonlinedatabase?

a.publishedsources.

b.experimentation.

c.surveying.

d.observation.

Q8.Whichofthefourmethodsofdatacollectionisinvolvedwhenpeopleareaskedtocompleteaquestionnaire?

a.publishedsources.

b.experimentation.

c.surveying.

d.observation.

Q9.WhichofthefourmethodsofdatacollectionisinvolvedwhenapersonrecordstheuseoftheLosAngelesfreewaysystem?

a.publishedsources.

b.experimentation.

c.surveying.

d.observation.

Q10.Afocusgroupisanexampleofwhichofthefourmethodsofdatacollection?

a.publishedsources.

b.experimentation.

c.surveying.

d.observation.

Q11.Whichofthefollowingistrueaboutresponserates?

a.Thelongerthequestionnaire,thelowertherate.

b.Mailsurveysusuallyproducelowerresponseratesthanpersonalinterviewsortelephonesurveys.

c.Questionwordingcanaffectaresponserate.

d.d.Alloftheabove.

Q12.Whichofthefollowingisareasonthatamanagerneedstoknowaboutstatistics?

a.Toknowhowtoproperlypresentanddescribeinformation.

b.Toknowhowtodrawconclusionsaboutthepopulationbasedonsampleinformation.

c.Toknowhowtoimproveprocesses.

d.Alloftheabove.

Scenario1-1

Questions13-15refertothisscenario:

Aninsurance