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Unformatted text preview: As we have noted, elasticity can be roughly compared by looking at the relative steepness or flatness of a supply or demand curve. Thus, it makes sense that the formula for calculating elasticity is similar to the formula used for calculating slope. Instead of relating the actual prices and quantities of goods, however, elasticity shows the relationship between changes in price and quantity. To calculate the coefficient for elasticity, divide the percent change in quantity by the percent change in price: Elasticity = (% Change in Quantity)/(% Change in Price) Remember that to find percent change itself, you divide the amount of change in a variable by the initial level of the variable: % Change = (Amount of Change)/(Initial Level) Another important thing to remember is that percentage changes can be positive or negative, but elasticity is always an absolute value. That is, even when an increase in negative, but elasticity is always an absolute value....
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 Fall '11
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 $1, 10%, 50%, 40%, $1.50

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