Samuel Maina

Built an end-to-end Customer Churn Analysis solution using Python, SQL, and Power BI. Python was used for data cleaning and preparation, SQL for exploratory data analysis and trend discovery, and Power BI for creating an interactive dashboard. The solution provides insights into...

E-Commerce Executive Sales & Performance Analytics

Retailers often generate strong revenue across thousands of transactions while lacking clear, consolidated visibility into what drives true profitability versus top-line volume. Without unified tracking across product lines,...

Road Safety Analysis | Python, SQL & Power BI

Developed an end-to-end road safety analytics project to help authorities understand accident patterns, identify high-risk areas, and make informed decisions about road safety interventions.

The project involved cleaning and preparing...

Electric vehicle data is only useful if you can actually find it in one place. This project started with exactly that problem: the data was scattered, and nobody could get a clear picture of what was on the road.

I tracked the data down and pulled it together using SQL. I cleaned...