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Answers and rating deltas for
How to identify an observation exists once in a column without using duplicated() or unique()?
| Author | Votes | Δ |
|---|---|---|
| Calum You | 2 | +1.57 |
| Jilber Urbina | 0 | -0.84 |
| Benjamin | 0 | -0.97 |
| dww | 0 | -0.61 |
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