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Answers and rating deltas for
Beginner tips on using plyr to calculate year-over-year change across groups
| Author | Votes | Δ |
|---|---|---|
| A5C1D2H2I1M1N2O1R2T1 | 5 | -0.06 |
| EDi | 5 | +0.49 |
Last visited: Sep 14, 2014, 5:07:29 AM