ANOVA Versus Regression Analysis of ATI Designs: An Empirical Investigation.

Thompson, Bruce

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Peer reviewed

ERIC Number: EJ348419

Record Type: CIJE

Publication Date: 1986

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ANOVA Versus Regression Analysis of ATI Designs: An Empirical Investigation.

Thompson, Bruce

Educational and Psychological Measurement, v46 n4 p917-28 Win 1986

This paper reports a Monte Carlo study of differences induced by different analysis choices over selected types of aptitude treatment interaction (ATI) data (nine combinations of three sample sizes and three population parameter effect sizes). Generally, ANOVA methods tended to overestimate smaller effect sizes and to underestimate larger effect sizes. (LMO)

Descriptors: Analysis of Variance, Aptitude Treatment Interaction, Effect Size, Monte Carlo Methods, Regression (Statistics), Statistical Bias, Statistical Studies

Publication Type: Journal Articles; Reports - Research

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Language: English

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