StackRating
An Elo-based rating system for Stack Overflow
Answers and rating deltas for
How to create a new data frame with the mean of 2 columns grouped by another variable using dplyr?
| Author | Votes | Δ |
|---|---|---|
| www | 1 | 0.00 |
Last visited: Jan 1, 2019, 8:55:20 AM