A new GRE prep class finds a sample from a recent session of their class has ave
ID: 3129337 • Letter: A
Question
A new GRE prep class finds a sample from a recent session of their class has average scores that produce an effect size of d = 2.6 compared to the known GRE average. Interpret this effect size.
The GRE class had an average score 2.6 standard deviations above the known GRE average.
The GRE class had an average score 2.6 standard deviations below the known GRE average.
The GRE class had an average score 26 points away from the known GRE average.
The difference in the scores is so large, it would be considered statistically significant.
Explanation / Answer
The GRE class had an average score 2.6 standard deviations above the known GRE average.
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