An interactive Shiny app to explore historical returns of DAX, SMI, CAC, and FTSE indices using the EuStockMarkets dataset (1991–1998). Select an index, adjust the date range, and view key metrics like cumulative return, volatility, and max drawdown.

An interactive Shiny app that calculates BMI from metric or imperial inputs and provides personalised WHO-based health recommendations with a visual BMI scale.

Which products win on Brazil's largest e-commerce marketplace, and which never find their customers? This report uses K-Means clustering and Random Forest on the Olist dataset (100k+ orders, 74 categories) to segment products by sales behavior and identify the drivers of high performance. Built with R as part of the Spinnaker Program, Warsaw 2026.

A k-means clustering analysis of delivery performance across ~96,000 delivered Olist orders, segmenting orders by delivery time, lateness against estimate, and review score, with a geographic breakdown by customer state. Produced for the University of Warsaw SPINAKER programme.