quasi experiment

quasi experiment

A design for studies in the field or in real-life situations where a researcher can manipulate some independent variables but, can’t randomly assign subjects to control and experimental groups. Quasi-experimentation was developed for evaluating research projects.
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She discusses the different types of validity that make evaluation conclusions defensible; the concept of internal validity; three basic research designs used to assess causal claims about program impact (the randomized experiment, the quasi experiment, and the nonexperiment), their variations, and statistical models that can be used to analyze their data; survey sampling and questionnaire construction; and meta-analysis.
A Large-Scale Quasi Experiment Using Archival Data"

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