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Jaime Gonzalez owns a small publishing company in Utah and has a very restrictive budget for the market research he currently needs to conduct. He requires a large sample size for his research in order to arrive at insightful conclusions. Additionally, he wants to have excellent control over his sample. Keeping in mind his restrictive budget and other specifications, which of the following methods of contact would you advise Jaime to use?
Internal Validity
The extent to which a study can demonstrate a causal relationship between variables, free of confounding factors.
Random Assignment
is a process used in experimental designs to allocate participants to different groups in a study by chance, minimizing pre-existing differences among those groups.
Pretest-Posttest Nonequivalent Groups Design
A quasi-experimental design involving two groups that are not randomly assigned, with both groups measured both before (pretest) and after (posttest) a treatment or intervention.
Posttest-Only Nonequivalent Groups Design
An experimental design in which different groups are compared only after the treatment or intervention, without a pretest comparison.
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