Robin Stofkoper's Work | ContraWork by Robin StofkoperRobin Stofkoper
Data Analyst | Reporting, Data Quality & Insights
Working Hours & Health-Related Absenteeism in the EU
Analyzed Eurostat data to examine the relationship between average weekly working hours and health-related absenteeism across EU countries in 2019.
Using Python, correlation analysis and linear regression, I found a significant negative association (r = -0.661), while explicitly accounting for limitations such as aggregated country-level data and the distinction between correlation and causation.
Audience Campaign Funnel Analysis
Analyzed campaign and funnel performance to identify where users dropped off and which stages contributed most to conversion. The project focused on turning raw campaign data into clear funnel metrics and actionable insights. Freelance Bookings & Income Reporting Dashboard
Built a reusable reporting workflow for freelance bookings and income using Excel, Power Query and Power BI. The dashboard tracks booked revenue, paid revenue, outstanding amounts, booking status and performance over time. Cleaned and validated a retail dataset of 541,909 rows using SQL Server, with a focus on data quality, traceability and reproducible analysis.
I preserved the raw data, documented excluded records, and created a clean analysis-ready dataset of 530,100 rows for further sales analysis.