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Direct linkGoltz, Heather Honore; Smith, Matthew Lee – Practical Assessment, Research & Evaluation, 2010
Yule (1903) and Simpson (1951) described a statistical paradox that occurs when data is aggregated. In such situations, aggregated data may reveal a trend that directly contrasts those of sub-groups trends. In fact, the aggregate data trends may even be opposite in direction of sub-group trends. To reveal Yule-Simpson's paradox (YSP)-type…
Descriptors: Data, Statistics, Statistical Analysis, Models
