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Answers and rating deltas for

How to create a column based on values in the rows above/below the row in a different column in R

Author Votes Δ
Carl Witthoft 1 +0.92
baha-kev 1 +0.06
G. Grothendieck 1 -0.19
Tyler Rinker 1 +0.54
Last visited: Sep 14, 2014, 5:07:29 AM