Figure 1From: Improving official statistics in emerging markets using machine learning and mobile phone data Most discriminative feature in EU (left): the maximum text response delay during the week; in SA (right): percent of calls initiated by the person during the weekend nights. The dashed lines indicate the modes of the distributions, with 25 minutes for females and 18 minutes for males in EU and 22% for females and 48% for males in SA.Back to article page