jpch - 7:00 pm on Sep 8, 2012 (gmt 0)
As we know, all sites are different and it's very difficult to make statements to cover them all.
Exactly...which is why Google doesn't even make statements that would cover every site's analytics.
The highest CTR I received by the end of the day was around 0.75%.
Using my observations I would say this is abnormal. A high traffic site should never have less than 1.5% CTR. But WTF do I really know as I'm just basing this on my observations...which are very limited given how many sites I have AdSense on and how many sites there are with AdSense. So hopefully people reading this thread or posting on here like they are experts with definitive knowledge will consider how limited their view of the AdSense world really is.