http://thinkprogress.org/economy/2012/10/24/1078641/college-grad-pay-gap/?mobile=nc

So I was just looking at this site, and I'm curious as to what the subreddit thinks of the data. I know there is quite a bit of conflicting data surrounding the wage gap, but how does one go about explaining the data found in that article? It basically compares college graduates who are newly graduated, and notices that females tend to be paid less than males even from the same graduating majors.