References

Group, World Bank. “Countries GDP,” 2024. https://data.worldbank.org/indicator/NY.GDP.MKTP.CD?end=2024&start=1960.

Kuznetsova, Anastasiya. “Same Data, Different Questions.” BI Bites, 2025. https://nastengraph.substack.com/p/same-data-different-questions.

Reichheld, Frederick F. “The One Number You Need to Grow.” Harvard Business Review 81, no. 12 (2003): 46–55.

Vink, Ritchie, and Polars Contributors. “Polars: A Fast DataFrame Library in Rust and Python.” https://pola.rs/, 2025.

Wickham, Hadley. “Tidy Data.” Journal of Statistical Software 59, no. 10 (2014): 1–23. doi:10.18637/jss.v059.i10.