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Imagine a student who typically averages a score of on weekly testing metrics suddenly achieves an extreme score of . Applying the concept of regression to the mean, what prediction would you make about the student's next score, and why?
Question: Imagine a student who typically averages a score of on weekly testing metrics suddenly achieves an extreme score of . Applying the concept of regression to the mean, what prediction would you make about the student's next score, and why?
Sample answer: Applying regression to the mean, the student's next score is predicted to be significantly lower and closer to their long-term average of . This is because the score of represents an extreme performance, which statistical probability dictates will be followed by a more typical, average result rather than indicating a permanent shift in ability.
Key points:
- Predict that the student's next score will be significantly lower, moving back toward .
- Apply the concept of regression to the mean to justify the predicted decrease.
- Explain that the initial high score of was a natural fluctuation rather than a permanent improvement.
Feedback: The response should correctly predict that the student's next score will be significantly lower (regressing toward ) and explain that extreme performances are statistically followed by more typical, average outcomes rather than representing a permanent change.
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Research Methods in Psychology - 4th American Edition @ KPU
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