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Answers and rating deltas for
How to do sapply to several columns in data frame r and have the result in a new column
| Author | Votes | Δ |
|---|---|---|
| GPierre | 1 | -0.05 |
| Andrew Jackson | 1 | -0.10 |
| polka | 1 | +0.14 |
Last visited: Mar 1, 2016, 7:44:43 PM