Ten projects, from exploratory analysis to Tableau dashboards and a two-part final project. Each one links to the notebook or the running app.
Final project · cohorts & hypothesis testing · 2026
Only 2.01% of 58,139 first-time buyers came back within 180 days. A late first delivery lifts 1–3 ratings from 18% to 76%, and five hypotheses tested with Holm and power.
A/B test & SQL · 2026
A recommender A/B test where the new version came in below control at every funnel step (significant only on the product page) and the design broke its own spec, plus a five-table SQL analysis of a reading app with CTEs and window functions.
Machine learning · 2026
A model that finds 83% of the customers about to leave a gym chain, a leakage test on the suspect feature, and five customer groups whose churn runs from 2.2% to 52.6%.
Tableau dashboard · 2026
A Tableau Public dashboard over 12,343 daily records in five countries, with date and country filters driving all four views, and the three caveats that change how it reads.
Funnel & experiment · 2026
Where an app loses users on the way to payment, read from 240,887 events, then an A/A/B test on a new font across 20 z-tests.
Market research · 2026
Market research across 9,592 Los Angeles establishments to ground a robot-café concept: type, seats and chain viability.
Statistics & prioritisation · 2025
Hypothesis prioritisation with ICE and RICE, then an A/B test using non-parametric statistics.
Marketing analytics · 2025
Cohorts, LTV, CAC and ROMI by source and device, plus DAU/WAU/MAU and retention.
Exploratory analysis · 2025
Exploratory analysis of 16,000+ titles from 1980 to 2016 by platform, region and genre.
SQL & hypothesis testing · 2025
Weather web scraping, SQL aggregation and a hypothesis test on ride duration.
Dashboard · 2025 · Live app
An interactive app on the highest-rated IMDB films and the financial impact of an Oscar.