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Rating Stats for

Øyvind Langsrud

Rating
1492.24 (4,364,631st) 		Reputation
41 (1,157,563rd)
Page: 1
Title Δ
Divide each column of a dataframe by one row of the dataframe -3.24
More general or efficient approach for this matrix multiplication? -1.29
How to sum a variable by group with NA? -3.23