How many clicks are enough to get a general CTR?

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bluebuddha

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Apr 11, 2008
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I've heard from 50 to 500+

How many clicks should an ad get before you see the CTR and decide if you wanna go ahead with the ad or change it?
 


I would say between 50-500+ clicks

but srsly, learn basic statistics. You will learn that significance starts to set in around 30.
 
time also matters so i'd say spread over a couple days is good as well
 
The number 30 in stats is for positive outcomes - so in this case 30 clicks, not 30 impressions.

Be aware that this is a very general rule and can lead to a lot of bad decisions.

Take a lesson from political pollsters and put error bars on your numbers. Use 80% or 90% confidence intervals (meaning 8/9 out of 10 measurements you will be within the error bar range) if your range is too wide - say 5% CTR +or- 5%, then you need to run more impressions until the error bar gets into an acceptable comfort zone. Only you can define that zone.

As a general rule your margin of error will halve each time you double your denominator. So if your error bars after 1000 impressions is +/- 5% then your error bar after 2000 impressions will be +/- 2.5%.
 
every day of the week may convert differently. I'd say 100 clicks A day for a week to get some relevant stats
 
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