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Answers and rating deltas for
How to calculate mean per group from list of data.tables?
| Author | Votes | Δ |
|---|---|---|
| r2evans | 3 | 0.00 |
Last visited: Jan 20, 2019, 2:35:48 AM
| Author | Votes | Δ |
|---|---|---|
| r2evans | 3 | 0.00 |