Big Data ethics and selection-bias: An official statistician’s perspective

Abstract

Official statistics are fundamental to democracy.With increasing demands for more relevant, frequent and rich statistical information, and declining resources, National Statistical Offices are continually looking for more cost effective ways in the production of official statistics.With the advent of the Internet of Things, they are increasingly exploring opportunities to harness Big Data as a source for official statistics.Use of Big Data, however, raises a number of ethical and statistical challenges for official statisticians, which are explored in this paper.This paper also proposes methods to adjust for self-selection bias, or coverage bias, normally associated with Big Data, by utilising random samples generally available from National Statistical Offices.We conclude that National Statistical Offices are generally well equipped to address these challenges.

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