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Key Terms
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Below are the key terms featured in this chapter. The textbook's full glossary is also available for online searching.


constant-cost industry  an industry that is not a major user of any single resource
(See page(s) 62)
cross-price elasticity  the responsiveness of a product's quantity demanded to a change in the price of another product
(See page(s) 58)
elastic demand  demand for which a percentage change in a product's price causes a larger percentage change in quantity demanded
(See page(s) 51)
elastic supply  supply for which a percentage change in a product's price causes a larger percentage change in quantity supplied
(See page(s) 60)
immediate run  the production period during which none of the resources required to make a product can be varied
(See page(s) 61)
income elasticity  the responsiveness of a product's quantity demanded to a change in average consumer income
(See page(s) 58)
increasing-cost industry  an industry that is a major user of at least one resource
(See page(s) 62)
inelastic demand  demand for which a percentage change in a product's price causes a smaller percentage change in quantity demanded
(See page(s) 51)
inelastic supply  supply for which a percentage change in a product's price causes a smaller percentage change in quantity supplied
(See page(s) 60)
long run  the production period during which all resources required to make a product can be varied, and businesses may either enter or leave the industry
(See page(s) 61)
perfectly elastic demand  demand for which a product's price remains constant regardless of quantity demanded
(See page(s) 51)
perfectly elastic supply  supply for which a product's price remains constant regardless of quantity supplied
(See page(s) 62)
perfectly inelastic demand  demand for which a product's quantity demanded remains constant regardless of price
(See page(s) 52)
perfectly inelastic supply  supply for which a product's quantity supplied remains constant regardless of price
(See page(s) 61)
price ceiling  a maximum price set below equilibrium
(See page(s) 64)
price elasticity of demand  the responsiveness of a product's quantity demanded to a change in its price
(See page(s) 51)
price elasticity of supply  the responsiveness of a product's quantity supplied to a change in price
(See page(s) 60)
price floor  a minimum price set above equilibrium
(See page(s) 64)
public good  a product whose benefits cannot be restricted to certain individuals
(See page(s) 70)
short run  the production period during which at least one of the resources required to make a product cannot be varied
(See page(s) 61)
spillover benefits  positive external effects of producing or consuming a product
(See page(s) 69)
spillover costs  negative external effects of producing or consuming a product
(See page(s) 68)
spillover effects  external effects of economic activity, which have an impact on outsiders who are not producing or consuming a product
(See page(s) 68)
total revenue  the total income earned from a product, calculated by multiplying the product's price by its quantity demanded
(See page(s) 52)
unit-elastic demand  demand for which a percentage change in price causes an equal change in quantity demanded
(See page(s) 54)







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