Lecture5_summarize your data

Lecture5_summarize your data - Summarize your data Po pula...

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Unformatted text preview: Summarize your data! Po pula tio n ve rs us s a m ple Po pula tio n ve rs us s a m ple Sample : The part of the population we actually examine and for which we do have data. How well the sample represents the population depends on the sample design. A s tatistic is a number describing a characteristic of a s ample. Population : The entire group of individuals in which we are interested but cant usually assess directly. Example: All urban ecosystems, all Douglas-fir trees in Oregon, all fish A p arameter is a number describing a characteristic of the p opulation. Population Sample To wa rd s tatis tic al infe re nc e To wa rd s tatis tic al infe re nc e The techniques of inferential statistics allow us to draw inferences or conclusions about a population in a sample. Your estimate of the population is only as good as your sampling design. Your sample is only an estimateand if you randomly sampled again you would probably get a somewhat different result....
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Lecture5_summarize your data - Summarize your data Po pula...

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