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Download full textTipton, Elizabeth – Society for Research on Educational Effectiveness, 2011
The main result of an experiment is typically an estimate of the average treatment effect (ATE) and its standard error. In most experiments, the number of covariates that may be moderators is large. One way this issue is typically skirted is by interpreting the ATE as the average effect for "some" population. Cornfield and Tukey (1956)…
Descriptors: Probability, Statistical Analysis, Experiments, Generalization
