Once you have AdSense and Analytics tied together you can gleen invaluable information. By tying these two google tools together you are able to dig into site revenue via google adsense.
Here is an example of the statistics and revenue information you can find. See the screen shot on the right. First note that you can obtain these statistics in aggregate for the site and on a page by page basis. Each page will show the revenue generated. The typical google analytic filters apply, such as the time frame of viewing a day, week, month, or other specific date range. The amount of revenue is shown as well as an estimate of the CPM. CPM is the revenue per thousand, more typically called the cost per thousand but can be described as revenue. More stats are shown.
This information can be invaluable in determining the value of specific areas of the site as well as pages. Here is a previous article to assist in the linking of google analytics to google adsense.