I'm seeing a growth of CTR in my account and 126 clicks 5.75 $. Is this normal for a electronic and music info site? How can i know that this clicks are invalid or valid?
If the pattern is really out of place compared to what you normally see, then they are likely invalid. It is a good idea to check your logs and see if you possibly have some kind of bot clicking your ads. If this is all really difficult for you, its a good idea to find a tracking script that will more easily provide you details on where and how these clicks are happening. Good luck!