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Ding Peng; Avi Feller; Luke Miratrix – Grantee Submission, 2016
Applied researchers are increasingly interested in whether and how treatment effects vary in randomized evaluations, especially variation not explained by observed covariates. We propose a model-free approach for testing for the presence of such unexplained variation. To use this randomization-based approach, we must address the fact that the…
Descriptors: Randomized Controlled Trials, Statistical Inference, Evaluation Methods, Testing