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Unformatted text preview: – Population: Entire group of animals or people belonging to a particular category (e.g., all married women) Some Problems • Internet Surveys: – Web based research – Low cost and can reach many people – Samples are not representative • Courtesy Bias: – Problem in research – A tendency to give “polite” or socially desirable answers Separating Fact from Fiction • Be skeptical • Consider the source of information • Ask yourself, “Was there a control group?” • Look for errors in distinguishing between correlation and causation Be sure to distinguish between observation and inference (e.g., Robert is crying, but do we know why he is crying?) • Beware of oversimplifications, especially those motivated by monetary gain • Remember, “for example” is no proof!...
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- Spring '10
- representative, Correlation does not imply causation, Covariance and correlation, high school grades