摘要:The Economic Freedom of the World (EFW) index measures the extent to which nations allow their citizens economic freedom. The freedom of people to trade internationally is a featured area within the index. One component of this area is the size of the trade sector, or rather the deviation of a country's trade sector from its expected size. This note explains the basic methodology used to estimate the model and create the ratings for the deviation of a country's trade sector from its expected size component of the EFW index