【独家发布】A goodness of fit test for the rasch model

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The Rasch model is an item analysis model with logistic item characteristic curves of equal slope,i.e. with constant item discriminating powers. The proposed goodness of fit test is based on a comparison between difficulties estimated from different scoregroups and over-all estimates.

Based on the within scoregroup estimates and the over-all estimates of item difficulties a conditional likelihood ratio is formed. It is shown that—2 times the logarithm of this ratio isx 2-distributed when the Rasch model is true.

The power of the proposed goodness of fit test is discussed for alternative models with logistic item characteristic curves, but unequal discriminating items from a scholastic aptitude test.

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关键词：Goodness Rasch model test mode

虽然我看不懂你分享的书，但是友情支持一下，哈哈哈

Jealy 发表于 2018-6-28 17:18
虽然我看不懂你分享的书，但是友情支持一下，哈哈哈

顶起来

zssg2012 发表于 2018-6-29 11:26
顶起来

zssg2012 发表于 2018-6-29 11:26
顶起来

谢谢，顶起来