This analysis explores worldwide COVID-19 vaccination data from the World Health Organization (WHO), covering 215 countries up to late 2023. Methods: Visualizations: Interactive 3D scatterplots (Plotly), time-series line charts, and comparative boxplots (ggplot2). Statistics: Descriptive summaries, Welch’s t-test (EURO vs. AFRO), and effect size

Submission for DAT301 midterm project.