Click Through Rate

How many impressions count for CTR?

[premier teague]

What does google adwords use as its basis for its ctr calculations?

I know that they base it on clicks/impressions, so how many impressions does it use in that calculation?

[AdWordsAdvisor]

What does google adwords use as its basis for its ctr calculations?

I know that they base it on clicks/impressions, so how many impressions does it use in that calculation?

Essentially, your CTR changes every single time your ad appears. So I guess the short answer is all impressions.

By the way, your CTR is actually calculated out to several decimal places - not just the single decimal place that you see in your stats. This is why it is really rare for two advertisers to have exactly the same CTR for a keyword in a given moment.

AWA

[realgames]

Essentially, your CTR changes every single time your ad appears. So I guess the short answer is all impressions.

AWA - Not sure this is strictly correct. I have loads of targeted keyword 'phrases' with actual CTR which vary from 30-40% but Adwords does not use this actual CTR to calculate BidRank but rather some constant default CTR set by Google. My theory is that this is because the Keywords have not met some arbitrary minimum number of impressions. Is this true and if so how many impressions does a new keyword need before CTR used for the Bid Rank is real time as you describe?

Please answer. I have asked SOOOO many times and I always get ignored.

[shaka1978]

realgames - you need 1000 impressions before your actual CTR comes into play. Prior to that you get the average CTR of all advertisers bidding for that key phrase.

There are plenty of threads discussing this. I can't remember them though I'm afraid. I'm sure eWhisper will know :)

Cheers,
Neil