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Big Mac Index
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Encyclopedic overview
Big Mac index, November 2022
The Big Mac Index is a price index published since 1986 by The Economist as an informal way of measuring the purchasing power parity (PPP) between two currencies and providing a test of the extent to which market exchange rates result in goods costing the same in different countries. It "seeks to make exchange-rate theory a bit more digestible." The index compares the relative price worldwide to purchase the Big Mac, the flagship hamburger sold at McDonald's restaurants.
Excerpted from Wikipedia’s “Big Mac Index” article, available under the CC BY-SA 4.0 licence.