Calculating Jumping Average Columns at Every n-th Row in R Using plyr Package

Creating a Merged Data Frame with Average Values Across Multiple Datasets

Understanding and Implementing the Yearly Evolution of a Variable in R

Data Manipulation with R: A Guide to Concatenating and Averaging Values in a Data Frame

Finding the Average of Last 25% Values from a Given Input Range in Pandas

Calculating and Handling Outlier in Mean Values of Two R DataFrames with Dplyr Library

Calculating Average Value in a LEFT JOIN Between Two Tables

Converting Timestamps in Microsoft Access: A Guide to Calculating Average Date/Time as a Decimal Number

Calculating Average Time Interval Length Between Moves for Each Player in PostgreSQL