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Rickles, Jordan H. – Society for Research on Educational Effectiveness, 2011
This study seeks to demonstrate a method for treatment effect estimation in a multisite observational study where the treatment is highly selective and the assignment mechanism varies across sites. The method is demonstrated by addressing three primary research questions about the effect of 8th grade algebra: (1) For students who take algebra in…
Descriptors: Computation, Probability, Mathematics Achievement, Grade 9