Evaluating Person and Item Fit in Science Achievement Test of TIMSS 2015 for Australian Grade 4 Students Using Rasch Measurement

DOI

10.2991/ecpe-18.2018.52How to use a DOI?

Keywords

Rasch model, students’ science achievement, person fit, item fit

Abstract

The purpose of the study was to evaluate the person and item fit of science achievement test for Australian grade 4 students (N = 421) using Rasch measurement. This study was conducted in two stages. First, the software evaluated the person fit then the misfitting persons are removed based on the criteria. Second, the software examined the item fit of the reduced data set. The result indicated that there were ten underfitting persons with the range of person fit index from 1.512 to 1.984. The item difficulty, infit, and outfit MNSQs range of the initial analysis and those of after misfitting person removal are slightly different. The Rasch item and person reliability slightly change. For the final analysis, the infit MNSQs and the outfit MNSQs are within the reasonable range for high stakes MCQs which implies that the items are good and indicate the sufficient fit to Rasch model for practical measurement purposes.

Copyright

© 2018, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Yulia Linguistika
PY  - 2018/09
DA  - 2018/09
TI  - Evaluating Person and Item Fit in Science Achievement Test of TIMSS 2015 for Australian Grade 4 Students Using Rasch Measurement
BT  - Proceedings of the 1st International Conference on Early Childhood and Primary Education (ECPE 2018)
PB  - Atlantis Press
SP  - 236
EP  - 240
SN  - 2352-5398
UR  - https://doi.org/10.2991/ecpe-18.2018.52
DO  - 10.2991/ecpe-18.2018.52
ID  - Linguistika2018/09
ER  -