This Methodological Note was written by Emmanuel Letouzé, Gabriel Pestre, and Emilio Zagheni. Funding for this paper was generously provided by the World Bank Group. Data-Pop Alliance is currently developing this note as one of the three inputs for the World Bank’s 2016 World Development Report: “Digital Dividends” (forthcoming). This paper works on modelling and correcting sample bias in Call Detail Records … Read More