Mathematics, 10.03.2020 09:12 341404143
Dr. Parrett is a sports psychologist for a large Southern university. The provost and chancellor have asked him to examine the relationship between athletic performance and academic stress at the university. For example, is it the case that the most talented athletes experience the greatest concern over their grades? The provost and chancellor have made it clear to Dr. Parrett that they want a large amount of external validity in the study. He has valid and reliable measures of both athletic performance and academic stress. He knows that he does not have the time or the money to study the entire population of interest.
1. What is the population of interest in Dr. Parrett’s study? (1 point)
2. Why does he need to be concerned with external validity/representativeness? (2 points)
3. Describe how Dr. Parrett could conduct the following types of sampling:
a. Convenience sample (1 point)
b. Simple random sample (1 point)
c. Cluster sample (1 point)
4. Of each of the sampling techniques above, which one do you think would lead to the most representative sample and why? (2 points)
Extra Credit (2 points)
How do you think they measure concern over their grades? Is this likely a self-report measure or observational measure and why do you think so?
Answers: 2
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Dr. Parrett is a sports psychologist for a large Southern university. The provost and chancellor hav...
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