Practical Statistics for Data Scientists: 50 Essential Concepts, Peter Bruce, Andrew Bruce, and Peter Gedeck, 2020 (O'Reilly Media) - Offers practical applications of statistical concepts, including quartiles and IQR, with relevance to data science and machine learning.
numpy.percentile, NumPy Developers, 2024 - Official documentation for calculating percentiles using NumPy, detailing the function's usage and parameters.
pandas.Series.quantile, pandas-dev, 2024 - Official documentation for calculating quantiles on a Pandas Series, a key method for understanding data distribution.