Microeconomics · 免费预览
收入弹性与需求交叉价格弹性
收入弹性可以区分正常品与劣等品、必需品与奢侈品，而需求交叉价格弹性的正负号则表明两种商品是替代品还是互补品。
1. Demand moves for more than price
Demand moves for more than price
2. Normal goods split by size
Normal goods split by size
3. Cross-price elasticity
Cross-price elasticity
4. Reading the whole table
Reading the whole table
5. Classifying by income elasticity
When household incomes in a city rise by 10 percent, transit bus ridership falls by 4 percent and restaurant meals rise by 18 percent. What are the income elasticities, and how are the goods classified?
6. Substitutes or complements
When the price of game consoles falls by 10 percent, sales of video games rise by 6 percent, while sales of streaming movie subscriptions fall by 2 percent. What do these cross elasticities tell us?
7. The cross elasticity of coffee and tea
The price of tea rises by 8 percent and the quantity of coffee demanded rises by 4 percent, with the tea price change taken as the cause. Compute the cross-price elasticity of demand for coffee with respect to the tea price and write the number.
8. Sorting by income elasticity
When incomes rise 10 percent, restaurant meals rise 15 percent, second-hand furniture falls 6 percent, and toothpaste stays flat. What are the classifications?
9. Spotting the complements
The price of printers falls by 10 percent and the quantity of ink cartridges demanded rises by 7 percent. What does the cross-price elasticity say about the relationship?
10. Income elasticity of dining
Household incomes rise by 10 percent and restaurant dining rises by 15 percent. Compute the income elasticity of demand for restaurant meals, and write the number.