Discussion of “on State Education Statisticsâ€: A Difficulty with Regression Analyses of Regional Test Score Averages

Paul R. Rosenbaum and Donald B. Rubin

Journal of Educational and Behavioral Statistics, 1985, vol. 10, issue 4, 326-333

Abstract: The Department of Education’s table “State Education Statistics†reports mean test scores by state and mean resource inputs by state. The means are calculated from quite different groups of students, a process we call inconsistent aggregation. We investigate the bias in regression coefficients caused by inconsistent aggregation, first using theoretical calculations, and then by artificially aggregating data from the High School and Beyond sample.

Keywords: Observational studies; aggregation; covariance adjustment (search for similar items in EconPapers)
Date: 1985
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Persistent link: https://EconPapers.repec.org/RePEc:sae:jedbes:v:10:y:1985:i:4:p:326-333

DOI: 10.3102/10769986010004326

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