Elasticity

E

Per (Tse), elasticity is a measure of how responsive a variable is to a change in one of its factors.

One common variable can be demand:
Demand elasticity is how responsive demand is to a change in a factor (price, income, price of other goods).

There are 3 types of demand elasticity:
Price elasticity of demand (PED)
Income elasticity of demand (IED)
Cross-price elasticity of demand (CED)

Work cited:
Tse, Harry. “Lecture-3 Equilibrium Elasticity.” 2025.

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Price Elasticity of Demand (PED)

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Price Discrimination