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Understanding Production Possibilities and Opportunity Costs: A Deep Dive into PPF

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rae
30 diapositives · 568 Views · Jul 30, 2014

This guide explores the concept of the Production Possibilities Frontier (PPF), illustrating how it represents the maximum combinations of goods produced when resources are utilized efficiently. It delves into key economic terminologies such as opportunity cost and the law of increasing costs, emphasizing the trade-offs involved in production decisions. Through examples of cola and pizza production, the document explains how opportunity costs are incurred with choices and the benefits of specialization. Learn how shifts in the PPF reflect changes in resources and productivity, and the fundamental principles of comparative and absolute advantage.

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  1. Production Possibilities and Opportunity Costs

  2. What is a Production Possibilities Frontier (PPF)? • A graph that shows the maximum combinations of goods that can be produced when resources and technology are used efficiently

  3. Scarcity & the PPF • Economics involves choice since limited resources means that there will be a limited output. A PPC will show that as tradeoffs are made, sacrifice or opportunity costs are incurred.

  4. A Quick Review of Terminology • Opportunity Cost is defined as the value of the next best alternative. • So…opportunity cost measures the sacrifice we make when we are forced to make choices due to scarcity.

  5. For simplicity, lets take a world with only 2 products Lets use cola and pizza (perhaps the flat pizzas we serve at lunch)

  6. Cola Pizza A typical PPF has the following shape: The curve has a negative slope. The curve is concave to the origin.

  7. Cola Pizza All points on the curve correspond to full use of resources. A B

  8. Cola Pizza Points outside the PPF are not feasible with existing resources. .A

  9. Cola Pizza Periods of unemployment or inefficiency in production correspond to points under the PPF. .A

  10. Shape of the PPF? Why Concave? • If PPF has a straight line, we have constant opportunity costs • If PPF concave, we have increasing opportunity costs

  11. Consider a straight line PPF Cola given up, the opportunity cost, remains constant (10 colas forgone for every additional pizza produced). Cola 40 30 20 10 1 2 3 4 Pizza

  12. Concave shape, increasing opportunity costs. Cola given up, the opportunity cost, is increasing Cola 40 30 20 10 1 2 3 4 Pizza

  13. What is the Law of Increasing Costs? • The opportunity cost of producing a good increases as more of the good is produced

  14. Why does the Law of Increasing Opportunity costs hold? • Because resources are not perfectly adaptable to all products … example next page.

  15. Say this is a company that can produce colas or pizzas, and let’s say that they begin by producing all colas and no pizzas. When they decide to produce their first pizza, they take away some of their resources from producing colas. In terms of labor, the firm will take away those resources that can easily produce pizzas as well as colas. But when we begin to make more pizzas, we start to take away resources that were REALLY good at producing colas, and are not so good at producing pizzas. Cola 40 30 20 10 1 2 3 4 Pizza

  16. How do we have more of everything? • By increasing our resources, either land, labor, capital, or entrepreneurship

  17. Economic growth indicates an increase in the total output of an economy. The PPF shifts to the right ! Cola Pizza

  18. Causes of rightward shifts in PPF’s? • Increase in resources • Increased productivity • Improved technology

  19. Can a PPF shift inward (to the left)? • YES!! For just the opposite reasons as an outward shift such as a loss of resources

  20. Capital goods Consumer goods Economic growth and the Capital Consumer goods tradeoff: From which point would an economy grow faster, A or B?? Answer is A, with more capital goods A B

  21. What should a country specialize in producing? • In those goods and services that it has a comparative advantage

  22. What is Comparative Advantage? • A country’s ability to produce a good at a lower opportunity cost than the country which it trades

  23. What is Absolute Advantage? • A country’s ability to produce a good using fewer resources than the country with which it trades

  24. Example: 2 people, 2 jobs, time required Job AJob B Judy 60 min. 75 min Sam 90 min 150 min

  25. In the table, Judy is absolutely advantaged at both tasks – she can work either job faster than Sam. But what is her comparative advantage? What is Sam’s comparative advantage?

  26. Judy’s comparative advantage is at job B, and Sam’s comparative advantage is at job A • To see why, look at the ratios in the table- Judy can do job A in 2/3 the time of Sam, but she can do job B in ½ the time, so she is relatively more efficient at job B.

  27. Theory of comparative advantage • Argues that output is greater when resources tend to specialize in their greatest comparative advantages

  28. Problem • With the same quantity of resources, Euphoria can produce 100 barrels of cola to Extasia’s 50 barrels, and Euphoria can produce 150 pizzas to Extasia’s 100. According to comparative advantage, what product should Extasia tend to specialize in? What about Euphoria?

  29. ANSWER: • Extasia should specialize in pizzas, Euphoria in cola production

  30. Conclusion • Production-possibility frontiers (and curves) help us to be able to analyze opportunity costs and trade-offs. • The analysis of opportunity costs can lead us to be able to extend our analysis even further into absolute advantage, comparative advantage, and specialization. • Be sure to review these fundamental concepts, and ask questions for clarification in cases where you are not understanding.