Pivoting Long Data to Wide Format with Counts and Percentages in R

Calculating the Sum of the Digits of a Factorial in SQL and Other Languages

Customizing Model Summary Output with Custom Variable Names and Grouping in R

Customizing ggplot2: Mastering Shapes, Color Scales, and Data Extraction

Filtering Data by Multiple Conditions After Group By Using Python and Pandas

Optimizing Postgres Queries: Mastering MAX Creation Time and GROUP BY Clauses

Replacing Character Values in a Pandas DataFrame Conditionally Using Regular Expressions

How to Fix Column Names When Reading HTML Tables with R's readHTMLTable Function and xml2 Package

Creating a PeriodIndex with an Anchored Offset Referencing a Year Start in Pandas: Workarounds and Solutions for Time-Series Analysis

Understanding How to Join Pandas DataFrames with Different Methods for Efficient Data Merging