Economics - 9214 OxfordAQA

How Prices Are Determined

Aperçu

Two identical tomatoes, grown in the same field on the same day. One sells for a few cents in a village market in August; the other sells for many times that in a city supermarket in January. Nobody set either price. No committee met. Both figures emerged from the same machinery, and this lesson takes that machinery apart piece by piece.

You will build a demand curve and a supply curve from data, learn the one distinction that examiners test more than any other in this course, between a shift of a curve and a movement along it, and find the equilibrium price where the two sides finally agree. Then you will meet elasticity: the measurement that tells a producer whether raising a price will raise revenue or destroy it, and the one calculation on this specification where leaving out a minus sign costs you a mark.

Objectifs

  1. The factors which determine the demand for a good or service
  2. Causes of changes in demand
  3. The demand curve
  4. Supply for goods and services
  5. The factors which determine the supply of a good or service
  6. Causes of changes in supply
  7. The supply curve
  8. Equilibrium price
  9. How equilibrium price is determined by supply and demand
  10. How markets supply and demand diagrams can illustrate a producer’s revenue
  11. Intermarket relationships
  12. Complements and substitutes
  13. How changes in a particular market are likely to affect other markets
  14. Price elasticity of demand
  15. Price elasticity of demand
  16. Factors affecting price elasticity of demand
  17. Measuring price elasticity of demand
  18. Cross elasticity of demand
  19. Price elasticity of supply
  20. Price elasticity of supply
  21. Factors affecting price elasticity of supply
  22. Measuring price elasticity of supply

Carte mentale

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Note de cours

A seller would love to charge as much as possible. A buyer would love to pay as little as possible. Neither gets their wish, and the figure they end up at is not a compromise either party designed. It is the only price at which the amount buyers want to buy happens to equal the amount sellers want to sell. Everything in this topic is an explanation of how a market finds that figure, and of what happens to it when the world changes.

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Évaluation de la leçon

Félicitations, vous avez terminé la leçon sur How Prices Are Determined. Maintenant que vous avez exploré le concepts et idées clés, il est temps de mettre vos connaissances à lépreuve. Cette section propose une variété de pratiques des questions conçues pour renforcer votre compréhension et vous aider à évaluer votre compréhension de la matière.

Vous rencontrerez un mélange de types de questions, y compris des questions à choix multiple, des questions à réponse courte et des questions de rédaction. Chaque question est soigneusement conçue pour évaluer différents aspects de vos connaissances et de vos compétences en pensée critique.

Utilisez cette section d'évaluation comme une occasion de renforcer votre compréhension du sujet et d'identifier les domaines où vous pourriez avoir besoin d'étudier davantage. Ne soyez pas découragé par les défis que vous rencontrez ; considérez-les plutôt comme des opportunités de croissance et d'amélioration.

  1. Which of the following would cause the supply curve for oranges to shift to the left? A. A fall in the cost of fertiliser B. An increase in the price of oranges C. An increase in the wages of orange pickers D. The introduction of new technology in orange growing Answer: C
  2. The price of coffee rises. What is the likely effect in the market for tea, a substitute? A. Demand for tea shifts to the left B. Demand for tea shifts to the right C. Supply of tea shifts to the left D. There is a movement along the demand curve for tea Answer: B
  3. The price of a good rises by 20 per cent and quantity demanded falls by 30 per cent. What is the price elasticity of demand? A. -1.5 B. -0.67 C. 0.67 D. 1.5 Answer: A
  4. Which of the following would be most likely to make the price elasticity of supply of a firm's product elastic? A. The firm is already producing at full capacity B. The good can be stored after production C. The good is highly perishable D. The good takes two years to grow Answer: B
  5. At a price above the equilibrium price in a competitive market, what will exist? A. Excess demand, so price will rise B. Excess demand, so price will fall C. Excess supply, so price will fall D. Excess supply, so price will rise Answer: C

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