Investigating the Difference in Life Expectancy at Birth Across Different Regions of the World

Student: CHISOM JULIUS EZEJI (Project, 2025)
Department of Statistics
Federal University of Technology, Owerri, Imo State

Abstract

ABSTRACT This study examines life expectancy variations across different world regions from 2000 to 2019 using data from the World Health Organization (WHO). The data, drawn from diverse countries on every continent, is assessed for ANOVA assumptions. Given non-normality, the Kruskal-Wallis test identifies significant differences in mean life expectancy among regions. Pairwise comparisons highlight specific disparities, notably between Africa and North America, Africa and Europe, Asia and North America, Asia and Europe, and South America and Europe. These findings stress the importance of targeted interventions in regions with lower life expectancy, aiding informed global health policy decisions.

Keywords
ANOVA Life expectancy Parametric None Parametric Pair wise multiple Significant difference Degree of freedom Asymptotic Test Statistic Model Assumption.
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