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Answers and rating deltas for

How to omit rows with NA in only two columns in R?

Author Votes Δ
A5C1D2H2I1M1N2O1R2T1 4 +0.24
Ari B. Friedman 4 +1.22
akrun 2 -1.46
Last visited: May 1, 2015, 9:08:47 PM