2026-05-04T04:58:28Z https://jpmipa.fkip.unila.ac.id/index.php/jpmipa/oai

oai:ojs.jpmipa.fkip.unila.ac.id:article/417 2025-05-04T10:50:59Z jpmipa:ART

Test Items Analysis of Mathematical Problem Solving Ability using a Classical Test Theory Approach Ridwan, Muhammad Rais Istiyono, Edi Widihastuti, Widihastuti  This study aims to analyze the item characteristics of the mathematics problem-solving ability test instrument using the Classical Test Theory model. The data collection was based on the results of the test documentation as many as 359 students with dichotomous data. Qualitative validation analysis by experts uses the panel method, and quantitative analysis uses the Aiken index and Content Validity Ratio (CVR), while quantitative validation uses biserial point correlation. The test reliability index used the Alpha-Cronbach method. The results of qualitative validation show that all items correspond to the indicators of solving mathematical problems, but technically writing a few items needs improvement. Quantitative analysis using the Aiken index and CVR shows all items are valid with good validity. The reliability of the test is stable, with a coefficient of 0.83. Then, the test instrument consists of items with very difficult, difficult, and easy levels. All items were able to distinguish the test taker's ability and the effectiveness of the distractor to function correctly. Keywords: classical test theory, biserial point correlation, validity, reliability. DOI: http://dx.doi.org/10.23960/jpmipa/v22i1.pp98-111    FKIP Universitas Lampung 2025-05-04 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://jpmipa.fkip.unila.ac.id/index.php/jpmipa/article/view/417 Jurnal Pendidikan MIPA; Vol 22, No 1 (2021): Jurnal Pendidikan MIPA; 98-111 2685-5488 1411-2531 eng https://jpmipa.fkip.unila.ac.id/index.php/jpmipa/article/view/417/309 Copyright (c) 2025 Muhammad Rais Ridwan, Edi Istiyono, Widihastuti Widihastuti https://creativecommons.org/licenses/by-sa/4.0