Mean Income Distribution

Project Overview

This project examines the spatial variation of mean household income across Sri Lanka using district-level census data. GIS-based thematic mapping and exploratory statistical techniques were applied to understand regional socio-economic disparities.

Study Area

The analysis covers all administrative districts of Sri Lanka, enabling comparison between urban, semi-urban, and rural regions.

Data Sources

District-wise Mean Household Income – Department of Census & Statistics
Sri Lanka Administrative Boundary Shapefile

Methodology

Data preprocessing and attribute joining
Choropleth mapping using graduated colours
Exploratory Data Analysis (EDA)
Histogram, Box Plot, and Scatter Plot analysis

Mean Income Choropleth Map

The map illustrates spatial income disparities, with higher income concentrations observed in more urbanised districts.

Statistical Visualisation

Income Histogram

Income Box Plot

Income Scatter Plot

Key Findings

Significant income variation exists among districts
Urban districts show consistently higher income levels
Income distribution is right-skewed with notable outliers

Tools & Skills

ArcGIS Desktop, MS Excel
Socio-economic GIS analysis
Choropleth mapping
Statistical data visualisation

Conclusion

This project demonstrates the integration of GIS and statistical analysis to explore socio-economic patterns, supporting evidence-based planning and development decisions.

Mean Income Distribution of Sri Lanka