Abstract. This quasi-experimental study addressed the need for practical training in statistical analysis by examining the impact of SPSS workshops on statistical test proficiency and data analysis literacy among seventy Bachelor of Secondary Education in Mathematics (BSED-Math) students. The research evaluated whether SPSS workshops could significantly enhance these critical skills. Using a pre-test and post-test one-group design, the study measured statistical proficiency with a performance test and data literacy with a researcher-developed questionnaire. The results showed significant improvements, with students advancing from limited proficiency to proficiency in statistical testing and from introductory understanding to analytical competence in data literacy. Additionally, a strong positive relationship was found between statistical test proficiency and data analysis literacy, meaning that as students improved in statistical test proficiency, their data analysis literacy also improved. These findings suggest that SPSS workshops are an effective tool for enhancing students' analytical capabilities. Future research should explore how well students retain these skills over time and assess the effectiveness of similar interventions across different academic disciplines. Additionally, investigating how SPSS training influences students' ability to apply statistical methods in real-world research could provide valuable insights into its broader applicability.

Keywords: Statistical test proficiency; Data analysis literacy; Statistical Package for Social Sciences; Workshop; Educational training