From Andrew Gelman's Blog

Statistical Modeling, Causal Inference, and Social Science is statistcs Blog.  It is primarily written by Andrew Gelman, a professor in the Departments of Statistics and Political Science at Columbia University.

In a July 1,2005 posting Andrew continues an earlier discussion on mispercetion of minorities and minorities. This earlier discussion was inspired by a note from Tyler Cowen reporting that the March Harper's Index includes the statement:

-Average percentage of UK population that Britons believe to be immigrants: 21
-Actual percentage: 8%

Respondents thought that on average, 20% of the population were immigrants. The real figure is just 4%; MORI /Readers Digest poll on Britain Today – Are we an Intolerant Nation? (October 2000)