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Answers and rating deltas for
How do I apply a function in R to certain columns of a data frame grouped by another column?
| Author | Votes | Δ |
|---|---|---|
| Señor O | 4 | +0.52 |
| Gregor Thomas | 3 | -2.13 |
Last visited: Sep 14, 2014, 5:07:29 AM