Someone who studies economies with a view to mathematics(noun)
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Use "econometrician" in a sentence
"An econometrician is a trained professional paid to use computers to guess wrong about the economy."
"A piece from the San Fransisco Fed economics letter an article by econometrician Edward Leamer"
"You are much better of with people who spend time figuring things out and deciding on basic collective rules and negotating the rest, in a human, political way, rather than having people with the social skills of an econometrician leave for no apparent reason."