弹性及其应用

Question 1

需求价格弹性

Answer 1

𧗾量一种物品需求量对对价格变动反应程度的指标

Question 2

怎么找需求价格弹性 公式

Answer 2

需求量变动百分比／价格变动百分比

Question 3

怎么计算变动百分比=

Answer 3

终值一初始值／初始值 x 100%

Question 4

计算变动百分比：中点法

Answer 4

终值一初始值／中点 x 100%
中点是初始值与终值之间的平均值

Question 5

决定需求价格弹性的因素

Answer 5

相近替代品的可获得性
物品是必需品还是奢侈品
物品的定义是宽泛还是习狭义
时间框架一长期比短期更富有弹性

Question 6

完全无弹性

Answer 6

需求价格弹性=需求量变动分比／价格变动的百分比= o

Question 7

缺乏弹性

Answer 7

需求价格弹性 = 需求量变动百分比／价格变动的百分比 = < 1

Question 8

单位强性unit elastic

Answer 8

需求价格弹性= 1

Question 9

富有弹性

Answer 9

需求价格弹性=＞1

Question 10

完全弹性

Answer 10

需求价格弹性=无穷大=任意％／o％

Question 11

What if demand is elastic

Answer 11

That means quantity is sensitive to a change in price

Question 12

What if demand is inelastic

Answer 12

When there’s an inelastic demand the quantity is insensitive to a change in price

Question 13

The more substitutes a product has, product of quantity is insensitive or sensitive in a change in price?

Answer 13

It is sensitive to a change in price.

Question 14

怎么找总收益？

Answer 14

总收益= p x Q

Question 15

价格上升对收益有两种影响

Answer 15

涨价意味着售出的每单为产品的收益增加。
需求定理：涨价会下降产品的销售量。

Question 16

如果富有弹性的话，收益有什么变成？

Answer 16

需求富有弹性时，价格上升会使收益减少。是因为 quantity of demand is sensitive to a change in price. So if there have富有弹性的产品and the price goes up means less quantity of demand and觉收益会减少

Question 17

缺乏弹性inelastic demand

Answer 17

the law of demand is at play here okay !!! When the price goes up the quantity goes down so in inelastic demand price went up a whole lot, but quantity decrease just little bit!!! so the size of the box got bigger that means when the demand is inelastic the price goes up the total revenue goes up or when the price goes down the total revenue goes down. 🙄 so example gas station never have sales is make sense now bc they’re not luxury product or have substitutes etc 🥲
Price goes up, total revenue goes up and price goes down total revenue goes down

Question 18

什么是供给价格弹性

Answer 18

衡量一种物品供给量对其价格变动反应程度的指标。

Question 19

怎么找供给价格弹性？

Answer 19

供给价格弹性=供给量变动百分比／价格变动百分比
使用中点法计算变动的百分比

Question 20

完全无弹性perfect inelastic(供给价格弹性)

Answer 20

供给价格弹性=供给量变动百分比／价格量变动百分比= o = 0% ／任意％

Question 21

缺乏弹性（供给）

Answer 21

供给价格弹性 = <1

Question 22

单位弹性（供给价格弹性）

Answer 22

供给价格=供给量变动百分比／价格量变动百分比= 1
卖者的价格敏感度：中等

Question 23

富有弹性（供给价格弹性）

Answer 23

供给价格弹性= ＞1

Question 24

完全弹性（供给价格弹性）

Answer 24

供给价格弹性=无穷大=任意％／0%

Question 25

供给价格弹性如何变动

Answer 25

由于生产能力限制，当供给量越大时，供给价格弹性越小。
P.40ppt

Question 26

需求收入弹性？怎么找需求收入弹性？

Answer 26

：衡量消费者收入变动时需求量如何变动。
需求收入弹性=需求量变动百分比／收入变动百分比

Question 27

正常物品的需求收入弹性？
低档物品的需求收入弹性？

Answer 27

＞O
< O

Question 28

需求交叉价格弹性？

Answer 28

：衡量一种物品需求量对另外一种物品价格变动的反应程度指标。
需求交叉价格弹性=物品1的需求量变动百分比／物品2的价格变动百分比

Question 29

需求交叉价格弹性：替代品，互补品交叉的价格弹性？

Answer 29

替代品的交叉价格弹性＞o
互补品的交叉价格弹性<o

Question 30

供给价格弹性在那个期内更富有弹性？

Answer 30

供给价格弹性在长期中比在短期中更富有弹性
Look at graphic