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Answers and rating deltas for
how to get the sum of a column of other rows in the same group using dplyr or anything else?
| Author | Votes | Δ |
|---|---|---|
| Marijn Stevering | 3 | +3.74 |
| lmo | 1 | -0.47 |
Last visited: Mar 14, 2017, 2:40:48 PM