Azomahou, Theophile; Diene, Mbaye - United Nations University-Maastricht Economic Research … - 2012
This paper examines the degree of polarization of GDP per capita of African economies between 1966 and 2008. Based on a nonparametric analysis, we find that countries tend to cluster in two classes of per capita GDP. Relying on the Wolfson's bipolarization measure, the results reveal that...