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Answers and rating deltas for
Why does R change the variable type when appending NA values to a data frame with factors?
| Author | Votes | Δ |
|---|---|---|
| Josh O'Brien | 9 | +1.21 |
| nograpes | 3 | +0.88 |
| eddi | 3 | +0.61 |
| josliber | 2 | -0.41 |
| Matthew Plourde | 0 | -1.94 |
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