“Think about it. Imagine how strong the “true” relationship must be if it shows up even when using only rough proxies for the “true” levels of inequality and immobility. In light of Winship’s criticisms, the high correlation in this chart is all the more remarkable. If his gripes are correct, then graph understates the correlation between inequality and mobility.” (via Freakonomics » Is Higher Income Inequality Associated with Lower Intergenerational Mobility?)
I posted this on a few social networks some weeks ago, and people like it, so here it is (again). Enjoy the student reactions!
Taken from the NYTWrites text mining application, based on who writes about what for the New York Times. Call it Zeitgeist if you prefer. Irene Ros, a visualization research developer at the Visual Communication Lab, a division of IBM Research, has done many other beautiful things with computer technology.
You might be thinking that the underlying method of thematic proximity must use some form of correlation to sort out the connections and their respective strength. You would be right to think so.
“The greater the support for McCain, the more hate groups per capita a state tends to have” (Nathan Yau, “Geography of hate”). Get your correlation-causation caps on,