Pandas - GroupBy and Aggregate (agg)
GroupBy operations follow a split-apply-combine pattern. Pandas splits your DataFrame into groups based on one or more keys, applies a function to each group, and combines the results.
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How to Use Agg with Multiple Functions in Pandas
Pandas provides convenient single-function aggregation methods like sum(), mean(), and max(). They work fine when you need one statistic. But real-world data analysis rarely stops at a single…