the income elasticity of demand需求的收入弹性问题

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请各位前辈指教小女子一题作业...
想知道到底题目中”proportional change in price“和“propotional change in quantity”是指“收入的变化”和”需求的变化“吗？


The long run income elasticity of demand for movie theater tickets is 3.42.  That means that the proportional change in price will exceed the proportional change in quantity.


true or false?


小女子刚接触经济学...感觉有点纠结.....

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关键词：elasticity elastic demand Income Last quantity theater 经济学 demand income

Elasticity measures percentage change in demand caused by percentage change in price. Since the elasticity is bigger than 1, then it means that one percent change in price will cause 3.42 percent change in demand. So proportional change in price will be smaller than proportional change in demand. I think it is false.

收入的需求弹性是富有弹性的，说明是奢侈品，一般奢侈品的价格弹性是很小的，个人认为正确

Income elasticity of demand is the change in quantity demanded/change in real income. For luxuries, income elasticity are greater than 1. Therefore, the price elasticity of movie theatre ticket is elastic, which means the change in quantity demanded>change in price. False!

是按比例变动，也就是变动的百分比

catcynthia0303 发表于 2012-2-2 12:46
Income elasticity of demand is the change in quantity demanded/change in real income. For luxuries,  ...

Thank so much~~ i got it! and u r right~~

AdrianW 发表于 2012-2-2 13:20
是按比例变动，也就是变动的百分比

恩！是的～
谢谢～

Saven007 发表于 2012-2-2 06:32
Elasticity measures percentage change in demand caused by percentage change in price. Since the elas ...

thx！！totally agree ur view～and u r right～

income elasticity    小于1 normal good 大于1 luxury
price elasticity  小于1 ordinary good 大于1 Giffien

两回事  income elasticity大 不一定price elasticity大 肯定不是一起变动的