Calculating Average of Rows Which Fulfill Certain Condition in R Using Base R and Tidyverse Packages

Calculating Average Cost Over Date Range with Latest Cost in Single SQL Query

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

Averaging Common-Name Values with dplyr: A Comprehensive Guide to Merging Multiple Named Rows into an Averaged Value Row

Calculating an Average Value in SQL: A More Efficient Approach Using Analytic Functions

Creating a Merged Data Frame with Average Values Across Multiple Datasets