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Technical Methods Report: Do Typical RCTs of Education Interventions Have Sufficient Statistical Power for Linking Impacts on Teacher Practice and Student Achievement Outcomes?

NCEE 2009-4065
October 2009

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Figure 3.1  The Use of Regression R2 Values for the Power Analysis

The Use of Regression R2 Values for the Power Analysis
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National Center for
Education Evaluation
and Regional Assistance
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