I am running one dating offer, and I have two cpa network and two landing pages.
1. In order to know which network has the better conversion rate, how many clicks I should run?
2. In order to know which landing pages has the better conversion rate, how many clicks I should run?
Thank you very much!
1. You should base it on conversions, clicks. Wait to you see say 10 conversions, if its anything more than 6-4 then cut the bad network, if it stays even then keep running till you can make a better judgement.
2. Same goes here, base it on conversions. If your landers have 100,000 clicks each and only 1 conversion, you can't really call any winners.
Great, Thank you, Mr Green!

eCPM is the piece of data that says it all here. I haven't run your numbers through any statistical significance formulas but from experience I can safely say that you should kill the first lander and let the bottom lander run.
I look at impressions and CPC. If you're not getting CRs after 10K then you need to cut it. If CPC is low (like 0.05/0.06 which means high CTR) I will let the ad run some more time because the traffic is cheap. If there are no CRs after 20K impressions it's time to move on.
You need to use whatever works for you. When I first started I thought LP CTR was the bees knees but there are other factors that can swing it. Just go with the flow.