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A vegetable vendor in a marketplace.
Economists study how people make decisions, such as those that occur in a market.
São Paulo's stock exchange. Buyers and sellers are not present themselves. They use intermediaries and technology to trade. Most ideas about buying and selling are the same as in a "real" market though.

Economics is the social science which studies economic activity: how people make choices to get what they want. It has been defined as "the study of scarcity and choice" and is basically about the choices people make. It also studies what affects the production, distribution and consumption of goods and services in an economy.

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