How to Design and Evaluate Research in Education |

How to Design and Evaluate Research in Education, 5/e

Jack R. Fraenkel, San Francisco State University
Norman E. Wallen, San Francisco State University

Causal-Comparative Research

Causal-comparative research	Research to determine the cause for, or consequences of, existing differences in groups of individuals; also referred to as ex post facto research.



Correlational research	Research that involves collecting data in order to determine the degree to which a relationship exists between two or more variables.

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