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1. marketing-ab-testing-analysis marketing-ab-testing-analysis Public

   Complete, reproducible A/B testing analysis of a 588K-user marketing dataset: statistical power & sample size planning, pre-registration, two-proportion z-test with 95% CI, and business-significanc…

   Jupyter Notebook

2. battleship-strategy-analysis battleship-strategy-analysis Public

   A deterministic Battleship simulator that pits configurable placement and firing strategies against each other in full round-robin tournaments, records every game as a replay, and reports statistic…

   Python

3. ecommerce-funnel-analysis ecommerce-funnel-analysis Public

   Pre-registered statistical analysis of the conversion funnel in cosmetics e-commerce (view → cart → purchase): Wilson CIs, χ²/z-tests with corrections, and a robustness battery. Python/polars/stats…

   Jupyter Notebook 1

4. store-sales-time-series store-sales-time-series Public

   Descriptive time-series analysis of the Kaggle Corporación Favorita store-sales dataset: data-integrity checks, MA/EMA smoothing, STL decomposition, national-holiday mapping, and an honest network-…

   Jupyter Notebook

5. olist-sql-analytics olist-sql-analytics Public

   Olist e-commerce SQL analytics: cohort retention, order funnel, RFM segmentation, top categories per state. PostgreSQL + Docker, reproducible via make all, bilingual README.

   Python

6. ultimate-readme-guide ultimate-readme-guide Public

   A comprehensive, opinionated spec for writing README files people actually read. Use with AI agents, code review, or as a template.