I finally set up and analytics account 2 days ago and have noticed a fair sized drop in my Adsense CPC today. Its very early days and could be just a bad day which I have had before but I wondered if anyone had noticed anything similar? G does state it has the right to "use" the analytics info'.
NO, there is no any relation between Analytics and CPC Analytics is to track the customers whereas Cost per Click is to drive hot customers to your business.