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| Evaluation Review | 1 |
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| Moffitt, Robert | 1 |
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| Journal Articles | 1 |
| Reports - Evaluative | 1 |
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Peer reviewedMoffitt, Robert – Evaluation Review, 1991
Statistical methods for program evaluation with nonexperimental data are reviewed with emphasis on circumstances in which nonexperimental data are valid. Three solutions are proposed for problems of selection bias, and implications for evaluation design and data collection and analysis are discussed. (SLD)
Descriptors: Bias, Cohort Analysis, Equations (Mathematics), Estimation (Mathematics)
