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Hoffman, R. Gene; Wise, Lauress L. – 2000
Classical test theory is based on the concept of a true score for each examinee, defined as the expected or average score across an infinite number of repeated parallel tests. In most cases, there is only a score from a single administration of the test in question. The difference between this single observed score and the underlying true score is…
Descriptors: Achievement, Classification, Observation, Probability