Extract the data for GDP per capita of al sovereign countries for selected years of 1960, 1990 and 2015 from global databases (like the IMF or World Bank, and perform: a o vergence data analysis based on the following questions. You can use any data analysis programming language that you are onvenien: with for this ter. paper. You can also use the programing language which we used in the class Gretl accessible for free download at http://gretl.sourceforge.net