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    Answers and rating deltas for
    Using group_by() from dplyr with predict.lm and do() in a pipe for year linear extrapolation
| Author | Votes | Δ | 
|---|---|---|
| avid_useR | 1 | -0.06 | 
| Ralf Stubner | 1 | +0.06 | 
Last visited: Jan 1, 2019, 8:55:20 AM