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Econ 105 Chapter 1


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The situation in which unlimited wants exceed the limited resources available to fulfill those wants.
The study of the choices people make to attain their goals, given their scarce resources.
Economic Model
Simplified versions of reality used to analyze real-world economic situations.
A group of buyers and sellers of a good or service and the institution or arrangement by which they come together to trade.
Marginal Analysis
Analysis that involves comparing marginal benefits and marginal costs.
The idea that because of scarcity, producing more of one good or service means producing less of another good or service.
Centrally Planned Economy
An economy in which the government decides how economic resources will be allocated.
Market Economy
An economy in which the decisions of households and firms interacting in markets allocate economic resources.
Mixed Economy
An economy in which most economic decisions result from the interaction of buyers and sellers in market, but in which the government plays a significant role in the allocation of resources.
Productive Efficiency
The situation in which a good or service is produced at the lowest possible cost.
Allocative Efficiency
A state of the economy in which production reflects consumer preferences; in particular, every good or service is produced up to the point where the last unit provides a marginal benefit to consumers equal to the marginal cost of producing it.
Voluntary Exchange
The situation that occurs in markets when both the buyer and seller of a product are made better off by the transaction.
The fair distribution of economic benefits.
Economic Variable
Something measurable that can have different values, such as the wages of software programmers.
Positive Analysis
Analysis concerned with what is.
Normative Analysis
Analysis concerned with what ought to be.
The study of how households and firms make choices, how they interact in markets, and how the government attempts to influence their choices.
The study of the economy as a whole, including topics such as inflation, unemployment, and economic growth.

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