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Creating Multiple Columns with 0/1 Counts Based on Another Column in R Using Base R, dplyr, and tidyr

Handling Duplicate IDs When Aggregating Data from Two Tables

Pandas GroupBy Tutorial: Summing Columns for Data Analysis

Aggregating Data from One DataFrame and Joining it to Another with Pandas in Python

Grouping Columns into Intervals and Aggregating Corresponding Values with R

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Aggregating Time Series Data by Sector Using Pandas in Python