Basic Data Analysis.ppt

BasicDataAnalysisDescriptiveAnalysisThetransformationofrawdataintoaformthatwillmakethemeasytounderstandandinterpret;rearranging,ordering,andmanipulatingdatatogeneratedescriptiveinformationCopyright©2000byHarcourt,©2000byHarcourt,(percentage)FrequencytableCategoryproportions(percentages)ModeTypeofdescriptiveanalysisCopyright©2000byHarcourt,©2000byHarcourt,©2000byHarcourt,-OrderlyarrangementofdatainatableorothersummaryformatFrequencyTablePercentagesCopyright©2000byHarcourt,-and-columnformatthatexhibitsthecountofresponsesorobservationsforeachcategoryassignedtoavariableCopyright©2000byHarcourt,©2000byHarcourt, Central MeasureofTypeofScale Tendency DispersionNominal Mode NoneOrdinal Median PercentileIntervalorratio Mean StandarddeviationCentralTendencyCross-anizingdatabygroups,categories,orclasses,parisons;ajointfrequencydistributionofobservationsontwoormoresetsofvariablesContingencytable-Theresultsofacross-tabulationoftwovariables,suchassurveyquestionsCopyright©2000byHarcourt,.