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# matched-groups design.

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Jack is doing a project in educational psychology. Before the experiment, he rank-orderes all his participants according to achievement test scores. He takes the top two scores and randomly assigns one to the experimental group and one to the control group
Then he takes the next two scores and randomly assigns one to the experimental group and one to the control group. He continues in this manner until all participants have been assigned. What procedure is Jack using?

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Matched Groups are defined.

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Hi,

This is a matched-groups design. Matched Groups means that you match your ...

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