ECON 202 Lecture 40: ECON202Notes
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Non-rival in consumption (one person"s consumption does not affect another"s consumption of good. Markets provide less than efficient quantity of public good (free-rider problem: Situation in which one consumes good without paying) Price elasticity of demand: measures responsiveness of quantity demanded to change in price. Greater than 1: % change in quantity demanded > % change in price, demand is elastic (responsive to price change) Equal to 1: demand is unit elastic. Less than 1: % change in quantity demanded < % change in price, demand is inelastic (unresponsive to price change) Midpoint method: price elasticity = q + q1. Price of good takes up larger share of consumer"s budget = greater elasticity. The longer a price change remains in effect, the more elastic demand is. Demand is elastic: price/total revenue are inversely related (price incr = total revenue decr) Demand is inelastic: price/total revenue are directly related (price incr = total revenue incr)
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