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Elasticity of Demand. Chapter 4 Section 3. Demand Elasticity. Demand Elasticity : the extent to which a change in P causes a change in the Q demanded 3 types 1. Elastic = small change in P causes a large change in Q demanded example = fresh fruit.
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Elasticity of Demand Chapter 4 Section 3
Demand Elasticity • Demand Elasticity: the extent to which a change in P causes a change in the Q demanded 3 types • 1. Elastic = small change in P causes a large change in Q demanded • example = fresh fruit
2. Inelastic = a change in P causes a smaller change or no change in Q demanded • Example: table salt or gasoline • 3. Unit = % change in P = % change in Q demanded
Total Expenditures Test • Multiply the price by the quantity
Specific vs. General Market Examples: • Specific: Exxon Gas Station • If P increases, people would go somewhere else, therefore it is elastic (flexible) • General: All Gas Stations • If P increases, people will have to pay the increase, therefore it is inelastic (nonflexible)
Determinants of Demand Elasticity • If 2 or more NO = usually inelastic • If 2 or more YES = usually elastic