Sample Size Determination for Rasch Model Tests
- 1 December 2010
- journal article
- Published by Cambridge University Press (CUP) in Psychometrika
- Vol. 75 (4) , 708-724
Abstract
This paper is concerned with supplementing statistical tests for the Rasch model so that additionally to the probability of the error of the first kind (Type I probability) the probability of the error of the second kind (Type II probability) can be controlled at a predetermined level by basing the test on the appropriate number of observations. An approach to determining a practically meaningful extent of model deviation is proposed, and the approximate distribution of the Wald test is derived under the extent of model deviation of interest.Keywords
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