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Ch 4 Demand

Chapter 4 Demand

TermDefinition
demand combination of quantities that someone would be willing and able to buy over a range of possible prices at a given moment
microeconomics branch of economic theory that deals with behavior and decision making by small units such as individuals and firms
demand schedule listing showing the quantity demanded at all possible prices that might prevail in the market at a given time
incentive something that motivates
demand curve graph showing the quantity demanded at each and every possible price that might prevail in the market
Law of Demand rule stating that more will be demanded at lower prices and less at higher prices; an inverse relationship between price and quantity demanded
market demand curve demand curve that shows the quantities demanded by everyone who is willing ans able to purchase a product at all possible prices at one moment in time
marginal utility additional satisfaction or usefulness obtained from acquiring or consuming one more unit of a product
diminishing marginal utility decrease in additional satisfaction or usefulness as additional units of a product are acquired
change in quantity demanded movement along the demand curve showing that a different quantity is purchased in response to a change in price
income effect that portion of a change in quantity demanded caused by a change in a consumer's income when the price of a product changes
substitution effect the portion of a change in quantity demanded that is due to a change in the relative price of the good
change in demand different amounts of a product are demanded at every price, cause the demand curve to shift to the left or to the right
substitutes competing products that can be used in place of one another; products related in such a way that an increase in the price of one increases the demand of the other
completments products that increase the use of other products; products related in such a way that an increase in the price of one reduces the demand for both
elasticity a measure of responsiveness that tells us how a dependent variable, such as quantity demanded or quantity supplied, responds to a change in an independent variable such as price
demand elasticity the extent to which a change in price causes a change in the quantity demanded; demand elasticity has three cases; elastic, inelastic, or unit elastic
elastic type of elasticity in which a change in the independent variable (usually price) results in a larger change in the dependent variable (usually quantity demanded or supplied)
inelastic case of demand elasticity where the percentage change in the independent variable (usually price) causes a less than proportionate change in the dependent variable (usually quantity demanded or supplied)
unit elastic elasticity where a change in the independent variable (usually price) generates a proportional change of the dependent variable (quantity demanded or supplied)
Created by: PeaceIDABaker
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