Price Elasticity of Demand Definition: Price elasticity of demand measures the responsiveness of quantity demanded to changes in price. It is calculated...
Price Elasticity of Demand
Definition:
Price elasticity of demand measures the responsiveness of quantity demanded to changes in price. It is calculated by dividing the percentage change in quantity demanded by the percentage change in price.
Formula:
Price Elasticity of Demand = Percentage Change in Quantity Demanded / Percentage Change in Price
Factors Influencing Price Elasticity of Demand:
Slope: A slope of 1 indicates that the quantity demanded changes in the same direction as the price change. A slope greater than 1 means that the quantity demanded increases, while a slope less than 1 means that the quantity demanded decreases with a price change.
Intercept: The intercept represents the quantity demanded at the price of zero. A price elasticity of demand of 1 indicates that the quantity demanded is unchanged at zero price.
Market structure: Price elasticity of demand is typically higher in competitive markets, where sellers have more market power and can influence price changes.
Availability of substitutes: If there are many close substitutes for a good, then the price elasticity of demand will be lower.
Implications of Price Elasticity of Demand:
Demand sensitivity: High price elasticity of demand indicates that a small change in price can significantly impact the quantity demanded.
Competitive behavior: Price elasticity of demand affects how competitors respond to changes in price. If demand is highly elastic, competitors may lower prices to maintain demand.
Predicting demand changes: Price elasticity of demand can help predict changes in demand based on changes in price.
Examples:
If the price of a good increases by 10%, and the price elasticity of demand is 2, then the quantity demanded will decrease by 20%.
If the price of a luxury good increases by 20%, but the price elasticity of demand is only 0.5, then the quantity demanded will increase by 10%.
In a competitive market for a perishable good, the price elasticity of demand may be very high, as consumers may be unwilling to wait for a price decrease