Using GroupBy Aggregate Function that Computes Two Values at Once to Perform Multi-Column Aggregations in Pandas DataFrames

Decomposing Time Series Data in R using stats Package and data.table Alternative Methods

Calculating Percentages for Correct/Incorrect Button Presses in R: A Step-by-Step Guide to Data Analysis with R

Aggregating Beta and Co-Skewness per Year Using User-Defined Functions and Regression Analysis in R

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

Conditional Join with Subselect: A Flexible Approach for Complex SQL Queries

Grouping and Summing Multiple Variables in R: A Comprehensive Guide to Data Analysis

Transforming Data from Long Format to Wide Format Using dcast() in data.table

Retrieving Minimum Dates from SQL Databases While Ignoring Default Dates

Grouping Time Series Data by Every N Minutes in R: A Step-by-Step Guide