NURSAHID, I.; ABADI, A. M.; SIANIPAR, W. A. Assessing the problem-solving test items and self-efficacy questionnaire in statistics education. Beta: Jurnal Tadris Matematika, [S. l.], v. 19, n. 1, p. 39–57, 2026. DOI: 10.20414/betajtm.v19i1.779. Disponível em: https://jurnalbeta.ac.id/index.php/betaJTM/article/view/779. Acesso em: 30 may. 2026.