Contending with the 80/20 rule when studying online behavior
The Pareto principle, or “80/20 rule,” holds that in many systems, a minority of cases produce the majority of outcomes.
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The challenges of using real-time epidemiological data in a public health crisis
Three widely cited coronavirus trackers differ in their methods and in the kinds of information they provide.
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A behind-the-scenes blog about research methods at Pew Research Center.
For our latest research findings, visit pewresearch.org.
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