This blog post linked to from the comments in the article explains the "ecological correlation fallacy"[1] being described in the article: http://ed2worlds.blo

This blog post linked to from the comments in the article explains the "ecological correlation fallacy"[1] being described in the article: http://ed2worlds.blogspot.com/2013/01/gates-foundation-wastes-more-money.html http://ed2worlds.blogspot.com/2013/01/gates-foundation-waste... Key quote: "...it has been known for more than 60 years now that correlating averages of groups grossly overstates the strength of the relationship between two variables" Apparently, this was also used in the past to show high correlation between African-Americans and illiteracy. [1] http://en.wikipedia.org/wiki/Ecological_fallacy http://en.wikipedia.org/wiki/Ecological_fallacy