Choosing a group of 50 students from a roster of all students in a nearby school and inviting them to participate in a study would be an example of one way to

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Choosing a group of 50 students using a random selection method would result in a random sample, which is a representative subset of the entire population. This is important in many research studies to ensure that the findings can be generalized to the larger population. Selecting a sample of convenience, such as choosing students who are readily available or willing to participate, can introduce bias into the sample and limit the generalizability of the results. A pilot study involves conducting a small-scale version of the research to test the feasibility and effectiveness of the methods, and reducing demand characteristics involves minimizing the potential for participants to alter their behavior or responses based on their awareness of the study's goals.

Choosing a Group of 50 Students from a Roster of All