StackRating
An Elo-based rating system for Stack Overflow
Answers and rating deltas for
What's the R way to do the following group by?
| Author | Votes | Δ |
|---|---|---|
| G. Grothendieck | 6 | +1.95 |
| Prasad Chalasani | 5 | +0.48 |
| Andrie | 5 | +0.16 |
| Chase | 4 | -0.68 |
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