“…This is a standard methodology that has been applied to several topics, especially in the social sciences. A non-exhaustive list includes studies on the distribution of variables as diverse as income (Ram 2015;Chongvilaivan and Kim 2016;Bui, Nguyen, and Pham 2017), health resources (De Maio 2007;Alcalde-Unzu, Ezcurra, and Pascual 2009;Morita et al 2018;Saito et al 2020), education facilities (Quadrado, Loman, and Folmer 2001), sports results (Borooah and Mangan 2012), demographic behaviour (Bleha and Ďurček 2019;Pagliacci 2019), natural resources use (Duro, Schaffartzik, and Krausmann 2018;Gutiérrez and Inguanzo 2019;Cetrulo et al 2020;Tang et al 2020) and pollutant emissions (Xia, Wang, and Ji 2019;Bolea, Duarte, and Sánchez-Chóliz 2020;Pakrooh et al 2020).…”