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Handling Valid Extreme Outliers
Extreme outliers may sometimes represent honest and accurate estimates rather than errors. To manage these valid but extreme scores, researchers can either employ resistant statistics like the median, or they can compare analyses conducted both with and without the outliers. If the results differ substantially between the two analyses, best practice dictates reporting both sets of results and thoroughly discussing the discrepancies.
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Research Methods in Psychology - 4th American Edition @ KPU
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What term is used to describe an extreme score that falls significantly above or below the rest of the scores within a distribution?