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Answers and rating deltas for
How to keep only those rows of a data.frame if whole group fulfills condition
| Author | Votes | Δ |
|---|---|---|
| Shree | 1 | +3.66 |
| Jon Spring | 0 | -0.28 |
| Uwe | 0 | -0.18 |
Last visited: Jan 15, 2019, 7:45:55 AM