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| Error of Measurement | 1 |
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| Zimmerman, Donald W. | 1 |
| Zumbo, Bruno D. | 1 |
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Direct linkZimmerman, Donald W.; Zumbo, Bruno D. – Educational and Psychological Measurement, 2005
Educational and psychological testing textbooks typically warn of the inappropriateness of performing arithmetic operations and statistical analysis on percentiles instead of raw scores. This seems inconsistent with the well-established finding that transforming scores to ranks and using nonparametric methods often improves the validity and power…
Descriptors: Statistical Analysis, Psychological Testing, Raw Scores, Evaluation Methods
