(1.1)-BSAFC4-PPT商务统计课件

BusinessStatistics,AFirstCourse(4e)©2006Prentice-Hall,Inc.Chap1-1Chapter1

IntroductionandDataCollectionBusinessStatistics,AFirstCourse4thEditionBusinessStatistics,AFirstCourse(4e)©2006Prentice-Hall,Inc.Chap1-2LearningObjectivesInthischapteryoulearn:

HowstatisticsisusedinbusinessThesourcesofdatausedinbusinessThetypesofdatausedinbusinessBusinessStatistics,AFirstCourse(4e)©2006Prentice-Hall,Inc.Chap1-3BasicConceptsofStatisticsStatisticsisconcernedwith:

ProcessingandanalyzingdataCollecting,presenting,andtransformingdatatoassistdecisionmakersBusinessStatistics,AFirstCourse(4e)©2006Prentice-Hall,Inc.Chap1-4KeyDefinitionsApopulation(universe)isthecollectionofallmembersofagroupAsampleisaportionofthepopulationselectedforanalysisAparameterisanumericalmeasurethatdescribesacharacteristicofapopulationAstatisticisanumericalmeasurethatdescribesacharacteristicofasample总体样本变量统计量BusinessStatistics,AFirstCourse(4e)©2006Prentice-Hall,Inc.Chap1-5Populationvs.Sample

abcdefghijklmnopqrstuvwxyzPopulationSample

bcginoruy

MeasuresusedtodescribeapopulationarecalledparametersMeasurescomputedfromsampledataarecalledstatisticsBusinessStatistics,AFirstCourse(4e)©2006Prentice-Hall,Inc.Chap1-6TwoBranchesofStatisticsDescriptivestatisticsCollecting,summarizing,andpresentingdataInferentialstatisticsDrawingconclusionsaboutapopulationbasedonlyonsampledataBusinessStatistics,AFirstCourse(4e)©2006Prentice-Hall,Inc.Chap1-7DescriptiveStatisticsCollectdatae.g.,SurveyPresentdatae.g.,TablesandgraphsCharacterizedatae.g.,Samplemean=

BusinessStatistics,AFirstCourse(4e)©2006Prentice-Hall,Inc.Chap1-8InferentialStatisticsEstimatione.g.,EstimatethepopulationmeanweightusingthesamplemeanweightHypothesistestinge.g.,Testtheclaimthatthepopulationmeanweightis120poundsDrawingconclusionsaboutapopulation

basedonsampleresults.BusinessStatistics,AFirstCourse(4e)©2006Prentice-Hall,Inc.Chap1-9CollectingDataSecondarySourcesDataCompilationObservationExperimentationPrintorElectronicSurveyPrimarySourcesDataCollectionBusinessStatistics,AFirstCourse(4e)©2006Prentice-Hall,Inc.Chap1-10TypesofDataExamples:MaritalStatusPoliticalPartyEyeColor

(Definedcategories)Examples:NumberofChildrenDefectsperhour

(Counteditems)Examples:WeightVoltage

(Measuredcharacteristics)类型数据数量型数据BusinessStatistics,AFirstCourse(4e)©2006Prentice-Hall,Inc.Chap1-11ChapterSummaryReviewedbasicconceptsofstatistics:Populationvs.SampleParametervs.StatisticPrimar