Date of Publication :5th February 2024

Abstract: This study outlines the development steps of a mathematics learning outcomes test and compares item characteristics using AnBuSo, ITEMAN, and RStudio software. Employing the 4D model (define, design, develop, disseminate) in Research & Development (R&D) methodology, the research took place in an East Java 8th-grade junior high school during the 2022/2023 academic year's second semester, focusing on circle material. A small-scale trial involved 33 students. Content validity assessment by 3 experts showed high validity for all items. Exploratory Factor Analysis (EFA) for construct validity revealed 3 factors comprising 7 items. Facto r 1 contained 5 variables (items 1, 7, 9, 13, and 15), factor 2 had 1 variable (item 14), and factor 3 had 1 variable (item 12). Comparative analysis of item characteristics among AnBuSo, ITEMAN, and RStudio demonstrated similar and nearly identical values in differentiation an d difficulty level, indicating good differentiation and moderate difficulty across all items. Thus, it’s inferred that all three software options are equally effective for item characteristic analysis.

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