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A Note on Keats' Generalization of the Rasch Model
Published online by Cambridge University Press: 01 January 2025
Abstract
An alternative derivation is given for a simple test model which incorporates an ability parameter for the subject and difficulty level and guessing parameters for the problem. The probability of a correct response to the problem is a projective transformation of the problem difficulty. The ability and difficulty parameters separate into additive components.
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- Copyright © 1976 The Psychometric Society
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