ECON 201 Chapter Notes - Chapter 6: Peanut Butter, Unit, Demand Curve
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6. 1: the price elasticity of demand and its measurement. Law of demand - when the price of a product alls, the quantity demanded of the product increases but only tells firms that demand curves slope downward. The measurement of slope is sensitive to the units chosen for quantity and price. Use percentage change (not dependent on units of measurement. Price elasticity of demand - the responsiveness of the quantity demanded to a change in price, measured by dividing the percentage change in the quantity demanded of a product by the percentage change in the product"s price. Price elasticity of demand = percentage change in quantity demanded / percentage change in price. The price elasticity of demand is not the same as the slope of the demand curve. Price elasticity of demand for a price cut. Percentage change in price will be negative. Percentage change in quantity demanded will be positive. Price elasticity of demand for a price increase.