Price Elasticity of Demand. Two types of curves

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Two types of curves.

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Price Elasticity of Demand Two types of curves. Price Elasticity of Demand PED measures the responsiveness of demand to a change in price. PED Formula % change in QD % change in P Elastic or inelastic? If goods or services have a PED between 0 and minus 1 they are inelastic. Basically, a big change in price has lead to a relatively small change in quantity demand. Elastic or inelastic. If goods or services have a PED which is a greater negative than -1 (so, -1.3, -1.7, -2.4 etc) the goods are elastic. A relatively small change in price will lead to a larger change in quantity demand. Price elasticities of demand Oil Beer Cigarettes Cigarettes (teenagers) Airline flights Fruit shakes Price elasticities of demand Oil Beer-0.4 Cigarettes-0.2 Cigarettes (teenagers)-0.7 Airline flights-1.5 Fruit shakes-2.2 Factors affecting PED 1. A good with many substitutes will be elastic. Will it be elastic or inelastic? A good without substitutes will be inelastic. Will it be elastic or inelastic? 2. A non-essential good will be elastic. Addictive goods Will addictive goods be elastic or inelastic? Will it be elastic or inelastic? 3. If you only spend a small percentage of your money on the good, then you wont even notice price changes. They will be inelastic. Why? New York TimesAdidas Boots Annas soupOil Explain in one or two sentences why each product has such a different PED. PED and total Revenue Inelastic GoodIncrease priceTotal Revenue Inelastic GoodDecrease PriceTotal Revenue Unit Elastic GoodIncrease PriceTotal Revenue Unit Elastic GoodDecrease PriceTotal Revenue Elastic GoodIncrease PriceTotal Revenue Elastic GoodDecrease PriceTotal Revenue Please remember never to forget Price Elasticity of Demand will only ever tell you about changes in total revenue not profit. Oil In 1973 oil increases in price from $3 a barrel to $12 a barrel. The demand from the United States fell from 4.8 million barrels a day to 4.5 million barrels a day. Calculate the PED of oil in the USA. Football boots The price of Adidas Predator Boots rises from $150 to $200. The quantity demanded falls from 500,000 to 250,000. Calculate the Price Elasticity of Demand for these boots. Soup Anna sells 300 bowls of organic vegetable soup for 4 a day. She increases the price to 4.50. As a result, she now sells only 270 bowls of soup a day. What is the PED of Annas organic vegetable soup? New York Times The New York Times before 2009 sold 1.2 million copies a day. In 2009 the NYT increased its price from $1.50 to $2.