An end-to-end, portfolio-grade analysis of the Brazilian Olist marketplace using Python, SQL, DuckDB, statistical testing, rule-based RFM, cohort retention, automated QA, and a standalone Plotly ...
Abstract: In financial markets, the reliability and interpretability of trading strategies are critical for informed decision-making. A strategy becomes effective when we have backtesting results and ...
Acquiring an e-commerce customer costs several times more than retaining one, so a business that quietly loses half its buyers after a single purchase is burning its acquisition spend. This analysis ...
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