THE COMPARISON OF ITEMS‟ AND TESTEES‟ABILITY PARAMETER ESTIMATION IN DICHOTOMOUS AND POLITOMUS SCORING (STUDIES IN THE READING ABILITY OF TEST OF ENGLISH PROFICIENCY)

Heri, Retnawati (2014) THE COMPARISON OF ITEMS‟ AND TESTEES‟ABILITY PARAMETER ESTIMATION IN DICHOTOMOUS AND POLITOMUS SCORING (STUDIES IN THE READING ABILITY OF TEST OF ENGLISH PROFICIENCY). Seminar Nasional dan Temu Alumni Peran Pendidikan dalam Pembangunan Karakter Bangsa. ISSN 978-602-96172-6-9

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Abstract

This study aimed to compare the testees‘ ability estimation in the politomus and dichotomous scoring model. The data used in this study are the responses of testees to the Test of English Proficiency (TOEP) set 1 in reading subtest, which are usually scoring in dichotomous model then they are scoring in politomus model. In the reading subtest of TOEP, in one text presented several items related to the text. In the dichotomous scoring, each item is scored one by one item. As alternative, every item item is scored using dichotomous model separately, but for every text, the acquisition of these items are added to the score attained politomous model. The estimation of items‘ and abilities‘ parameter in dichotomous scoring were done using the Rasch models and in the politomous scoring were done with partial credit models using QUEST software. Comparative analysis of the two models are seen based on the average results of the estimated difficulty level, graphical analysis, calculating the correlation, and the results of the value of information function. The results of the analysis showed that the average item difficulty dichotomous scoring model is 0.486 with a standard deviation of 0.895 and the mean level of difficulty politomous scoring model is -0.105 with a standard deviation of 0.695. The correlations between abilities of participants using the dichotomous and the politomous scoring model is 0.94. The value of information function in the dichotomous scoring model is higher than in the politomous scoring models. These results indicate that the Reading of TOEP set 1,the dichotomous scoring model is better than the politomous scoring model.

Item Type: Article
Uncontrolled Keywords: dichotomous scoring model, politomous scoring model, Reading, Test of English Proficiency (TOEP)
Subjects: Prosiding > ICERE 2014
Divisions: Program Pascasarjana
Depositing User: Eprints
Date Deposited: 13 Aug 2015 08:41
Last Modified: 13 Aug 2015 08:41
URI: http://eprints.uny.ac.id/id/eprint/24891

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