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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
Chapter 1: Introduction
Chapter 2: Definition of a Mediator
Chapter 3: Theoretical Framework
Chapter 4: Statistical Power Formulas
Chapter 5: Empirical Analysis
Chapter 6: Summary and Conclusions
Appendix A: Proof of Equation (18)
References
List of Tables
List of Figures
PDF & Related Info
List of Figures
Figure 2.1
Typical Conceptual Model for an Education RCT
Figure 3.1
The Use of Regression R
2
Values for the Power Analysis