Yes, there is loads. Check out >>
http://wordpress.org/extend/plugins/tags/statistics
But I would also recommend Google Analytics -
www.google.com/analytics/
As far as earning money from it. There is Google Adsense
www.google.com/adsense/ and also do a search for paid posts or paid reviews there are many services where you can get paid to post on your blog by mentioning a website, company or product. Many people are earning thousands a month from it.
Check out these google results for more information on making money through blogs >>
http://www.google.com/search?hl=en&r...s+tips&spell=1