Estimation of Test Item Parameters with Polytomous Item Response Using Partial Credit Model (PCM)

DOI

10.2991/assehr.k.211219.042How to use a DOI?

Keywords

Item Parameter; polytomous; PCM; R

Abstract

Assessment activities would provide useful information if instruments developed and used have good quality. One of the standards for a quality test instrument is having acceptable item parameters. This research aims to analyze the quality of the test instrument in terms of the item parameters’ quality with difficulty level on polytomous scoring. This research is explorative research by using a quantitative approach. The data used in this research is the test participant responses data to the items of numeracy. The participants have involved as many as 273 students of class VIII SMP in DI. Yogyakarta Province. The polytomous item response theory model used in this research is the Partial Credit Model (PCM). The estimation of item parameters is carried out using the R Program. The results showed that of the ten test items analyzed, only six items had the right criteria based on the item location parameters (level of difficulty of the stage) and Item Characteristic Curve (ICC). The information function value obtained is in the range -3.00 to 3.00, representing the instrument developed is suitable for test participant with abilities from -3.00 to 3.00 or from low abilities to high abilities.

Copyright

© 2021 The Authors. Published by Atlantis Press SARL.

Open Access

This is an open access article under the CC BY-NC license.

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TY  - CONF
AU  - Suciati
AU  - Sudji Munadi
AU  - Sugiman
PY  - 2021
DA  - 2021/12/23
TI  - Estimation of Test Item Parameters with Polytomous Item Response Using Partial Credit Model (PCM)
BT  - Proceedings of the 2nd International Conference on Innovation in Education and Pedagogy (ICIEP 2020)
PB  - Atlantis Press
SP  - 232
EP  - 237
SN  - 2352-5398
UR  - https://doi.org/10.2991/assehr.k.211219.042
DO  - 10.2991/assehr.k.211219.042
ID  - 2021
ER  -