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Download full textThompson, Bruce – 1993
The nature of percentile ranks scores is explored using concrete heuristic examples. It is explained why arithmetic operations require measurement on equal-interval scales, and that percentile ranks are not measured on equal-interval scales and therefore may not be added or averaged. The consequences of inappropriately adding percentile ranks are…
Descriptors: College Admission, College Entrance Examinations, Decision Making, Ethics
