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Direct linkPreacher, Kristopher J.; Rucker, Derek D.; MacCallum, Robert C.; Nicewander, W. Alan – Psychological Methods, 2005
Analysis of continuous variables sometimes proceeds by selecting individuals on the basis of extreme scores of a sample distribution and submitting only those extreme scores to further analysis. This sampling method is known as the extreme groups approach (EGA). EGA is often used to achieve greater statistical power in subsequent hypothesis tests.…
Descriptors: Sampling, Statistical Analysis, Reliability, Measures (Individuals)
