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Answers and rating deltas for

Given an R dataframe with column A, how do I create two new columns containing all ordered combin...

Author	Votes	Δ
Henry	4	+3.35
Andrie	4	+0.69
kohske	2	-0.65
joran	1	-3.67

Last visited: Sep 14, 2014, 5:07:29 AM