Deadweight loss

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Intros
Lessons
  1. Deadweight Loss Overview:
  2. Market Failure
    • Definition of Deadweight Loss
    • Market Failure
    • Overproduction
    • Underproduction
    • An Example
  3. Sources of Market Failure/Deadweight Loss
    • Price & Quantity Control
    • Taxes & Subsidies
    • Externalities
    • Public Goods
    • Common Resources
    • Monopoly
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Examples
Lessons
  1. Calculating Deadweight Loss
    You have the following information:

    Price (dollars per orange)

    Quantity demanded (oranges per day)

    Quantity supplied (oranges per day)

    0

    40

    0

    1

    30

    5

    2

    20

    10

    3

    10

    15

    4

    0

    20


    Suppose the government limits the production of oranges per day to 10.
    1. What is the maximum price that consumers are willing to pay for the 10th orange?
    2. What is the minimum price that producers are willing to pay for the 10th orange?
    3. Is there an underproduction or overproduction in the market?
  2. You have the following information:

    Price (dollars per orange)

    Quantity demanded (oranges per day)

    Quantity supplied (oranges per day)

    0

    40

    0

    1

    30

    10

    2

    20

    20

    3

    10

    30

    4

    0

    40


    Suppose the government limits the production of oranges by 10. Find the deadweight loss.
    1. Understanding Source of Market Failures
      State which of the following will result in an underproduction, and which will result in an overproduction.
      1. Price & Quantity Control
      2. Taxes
      3. Subsidies
      4. Positive Externalities
      5. Negative Externalities
      6. Monopoly
    2. Due to the exponential growth of the population in planet Earth, more people are using resources such as water, land, air and food. This is an example of _______________.
      1. Public Good
      2. Externality
      3. Common Resource
      4. Monopoly
    Topic Notes
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    Market Failure


    Market failure is a scenario in which the allocation goods and services are not efficient. This happens when there are too little items produced (underproduction), or when too much items are produced (overproduction).


    Deadweight Loss: is the decrease in total surplus from the inefficient level of production.


    Deadweight Loss Underproduction Overproduction

    Once again, deadweight loss are mostly triangles, and can be calculated using the formula:


    A = bh2\large \frac{bh}{2}

    Sources of Market Failure/Deadweight Loss


    Price & Quantity Control: limiting the amount of quantity produced or putting a cap on prices can block adjustments to market equilibrium, which leads to underproduction.


    Taxes: increases the prices paid by buyers, and lowers the prices received by sellers. So, sellers decide to sell less of the item, which causes an underproduction.


    Subsidies: lowers the price paid by buyers, and increases the prices received by sellers. Hence, sellers decide to sell more of the item, which causes an overproduction.


    Externalities: a cost or benefit that affects someone other than the buyer or seller.
    1. When suppliers/producers do not consider external costs that doesn’t affect them, they overproduce.
    2. When buyers do not consider external benefits, there is an underproduction.

    Public Goods: A public good benefits everyone in the society, but not everyone wants to pay for it. Instead, people avoid paying for it, causing an underproduction.


    Common Resources: resources that are owned by no one, but can be used by everyone. Everyone’s self interest is to use the resource as much as possible, while ignoring the costs that fall on others. This leads to overproduction.


    Monopoly: a firm that is the only provider of a good or service. In this case, firms tend to maximize profit by setting the price beneficial for them, and limiting the quantity sold. This leads to underproduction.