Who Uses Who Uses Statistics?Statistics?

ExamplesExamples

Define the term Statistics.Define the term Statistics.

Statistics is a collection of Statistics is a collection of procedures and principles for procedures and principles for gathering data and analyzing gathering data and analyzing information in order to help people information in order to help people make decisions when faced with make decisions when faced with uncertainty.uncertainty.

MediaMedia

Television News Television News KTVU Channel 2KTVU Channel 2

News PapersNews Papers USA TodayUSA Today

PollsPolls Gallup PollGallup Poll

GovernmentGovernment

U.S. Department of Labor – U.S. Department of Labor – Bureau of Labor StatisticsBureau of Labor Statistics

U.S. Census BureauU.S. Census Bureau Federal Bureau of InvestigationsFederal Bureau of Investigations Department of Health &Human ServDepartment of Health &Human Serv

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Other OrganizationsOther Organizations

American Heart AssociationAmerican Heart Association American Lung AssociationAmerican Lung Association

gandmothergandmother California LotteryCalifornia Lottery

Case StudiesCase Studies

Summary statisticsSummary statistics Change in the rate of occurance, Change in the rate of occurance,

baseline ratebaseline rate Representative sampleRepresentative sample Unrepresentative sampleUnrepresentative sample Observational studyObservational study Randomized experimentRandomized experiment Statistical significance doesn’t imply Statistical significance doesn’t imply

practical importancepractical importance