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I'm split testing, and one skin has a higher revenue, while the other skin has a higher eCPM. Which one should I choose? If I select the higher eCPM, I assume that any future enhancements will bring a higher revenue, but then revenue now is real money.

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closed as primarily opinion-based by John Conde Aug 17 '14 at 12:52

Many good questions generate some degree of opinion based on expert experience, but answers to this question will tend to be almost entirely based on opinions, rather than facts, references, or specific expertise.If this question can be reworded to fit the rules in the help center, please edit the question.

Also, how many samples before it is a statistically significant difference? The splitter isn't capable of multivariate testing. –  Chloe Aug 16 '14 at 23:14