The survey is clearly a comparison of “ECONOMIC” Freedom. Here is an interesting CATO graph on the ‘Growth Of Fed Gov = Loss of Individual Freedom’: http://www.cato-at-liberty.org/tag/subsidy-programs/
But economic freedom does not exist in isolation from political freedom, or social freedom. The one is often a function of the others. Even within “Economic” freedom there are subdivisions which have been arbitarily weighted.