Can the choice of phone bias "big data"?

Much has been said about how Big Data can improve how businesses conduct their operations. The premise is that it improves efficiency and helps managers make better decisions. While I agree with this general assessment, big data can be a double-edged sword. It helps on one hand; but also raises issues on privacy, discrimination and bias on the other. In this post, I give an example of how the choice of the device collecting the data (your phone) can bias big data.

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