Chrispcritters - 7:03 pm on Jul 19, 2013 (gmt 0)
You'll have to test what placement works best for your site.
As I said above, AdSense needs textual relevance to be able to match ads to your content and deliver them to your visitors ... There also need to be advertisers who want to advertise to that type of content.
48 words of content on a page (outside of the site template, widgets, boiler plate, etc) is pretty darn thin.
If visitors to your site don't find the TEXT of your site informative, compelling, enlightening, interesting, insightful, or educational would an advertiser want to be associated with it?
CPC also varies by the quality of traffic to your site, why they come to your site. CPC varies by niche.