- •3. Difference between micro and macro economics.Role of economists in making policy
- •4 . Absolute advantage and comparative advantage.
- •5. How comparative advantage explains the gains from trade
- •6.The meaning of market. Determine the characteristics of competitive market
- •7.Describe a type of market that is not perfectly competitive
- •8.Determine the demand for a good in a competitive market.
- •14.Explain the relationship between total revenue and the price elasticity of demand
- •11.Describe the role of prices in market economies
- •12.The meaning of the elasticity of demand.Determine the elasyicity of Demand
- •13.Explain the ways of computing the price elasticity of demand
- •15.Explain the meaning and types of the elasticityof Supply. Determine the elasticity of Supply
- •17. Describe the different types of controls on prices. Give the real world examples of these two kinds of price controls.
- •18. Explain how price ceilings affect market outcomes. Draw the graphs.
- •19. Explain how price floors affect market outcomes. Draw the graphs.
- •21. The meaning of tax. Explain how taxes on buyers affect market outcomes.
- •22. How does elasticity affect the burden of a tax? Justify your answer using supply-demand diagrams.
- •24. Explain how to define and measure producer surplus.
- •25. Using a demand-supply diagram, explain and identify the following areas:consumer surplus, producer surplus, total surplus.
- •26. The meaning of total surplus in a market, and describe why might it be a good measure of economic well-being. Using a demand-supply diagram, show the areas representing total surplus
- •27. Name two types of market failure. Explain why each may cause market outcomes to be inefficient
- •28. Explain how taxes reduce consumer and producer surplus.
- •29. The meaning and causes of the deadweight loss from a tax.
- •30 Describe why some taxes have larger deadweight losses than others. Explain how tax revenue and deadweight loss vary with the size of a tax.
- •31. Explain the Laffer curve and supply-side economics.
- •32. Explain what determines whether a country imports or exports a good.
- •33. Explain who wins and who losses from international trade.
- •37The meaning of tariff. Describe its economic effects.
- •39Determine the arguments people use to advocate trade restrictions.
- •40 Describe what happens to the gains from trade when a tax is imposed.
- •42 Describe why externalities can make market outcomes inefficient. Use the graphs to explain.
- •43 The types of private solutions to externality. Define the Coase theorem.
- •44. Determine why private solutions to externalities sometimes do not work
- •45. Identify the various government policies aimed at solving the problem of externalities
- •46. Describe the different kinds of goods, and give an example of each
- •47. The importance of free-rider problem. Explain why private markets fail to provide public goods.
- •Implicit Costs
- •53.Explain the various measures of cost. Give the meaning of average total cost and marginal cost and explain how they are related.
- •Variable Costs
- •54 Describe the relationship between short-run and long-run costs
- •55. Explain how competitive firms decide when to shut down production temporarily and how competitive firms decide whether to exit and enter a market?
- •56. Explain why some markets have only one seller. Describe how a monopoly determines the quantity to produce and the price to charge.
15.Explain the meaning and types of the elasticityof Supply. Determine the elasticity of Supply
The law of supply states that higher prices raise the quantity supplied. The price elasticity of supply measures how much the quantity supplied responds to changes in the price. Supply of a good is said to be elastic if the quantity supplied responds substantially to changes in the price. Supply is said to be inelastic if the quantity supplied responds only slightly to changes in the price. The price elasticity of supply depends on the flexibility of sellers to change the amount of the good they produce. For example, beachfront land has an inelastic supply because it is almost impossible to produce more of it. By contrast, manufactured goods, such as books, cars, and televisions, have elastic supplies because firms that produce them can run their factories longer in response to a higher price. In most markets, a key determinant of the price elasticity of supply is the time period being considered. Supply is usually more elastic in the long run than in the short run. Over short periods of time, firms cannot easily change the size of
their factories to make more or less of a good. Thus, in the short run, the quantity supplied is not very responsive to the price. By contrast, over longer periods, firms can build new factories or close old ones. In addition, new firms can enter a market, and old firms can shut down. Thus, in the long run, the quantity supplied can respond substantially to price changes.
16.Describe the concept of elasticity in three very different markets: the market for wheat, the market for oil, and the market for illegal drugs.
Elasticity a measure of the responsiveness of quantity demanded or quantity supplied to one of its determinants.
AN INCREASE IN SUPPLY IN THE MARKET FOR WHEAT. When an advance in farm technology increases the supply of wheat from S1 to S2, the price of wheat falls. Because the demand for wheat is inelastic, the increase in the quantity sold from 100 to 110 is proportionately smaller than the decrease in the price from $3 to $2. As a result, farmers’ total revenue falls from $300 ($3 100) to $220 ($2 110).
When analyzing the effects of farm technology or farm policy, it is important to keep in mind that what is good for farmers is not necessarily good for society as a whole. Improvement in farm technology can be bad for farmers who become increasingly unnecessary, but it is surely good for consumers who pay less for food. Similarly, a policy aimed at reducing the supply of farm products may raise the incomes of farmers, but it does so at the expense of consumers.
A REDUCTION IN SUPPLY IN THE WORLD MARKET FOR OIL. When the supply of oil falls, the response depends on the time horizon. In the short run, supply and demand are relatively inelastic, as in panel (a). Thus, when the supply curve shifts from S1 to S2, the price rises substantially. By contrast, in the long run, supply and demand are relatively elastic, as in panel (b). In this case, the same size shift in the supply curve (S1 to S2) causes a smaller increase in the price.
POLICIES TO REDUCE THE USE OF ILLEGAL DRUGS. Drug interdiction reduces the supply of drugs from S1 to S2, as in panel (a). If the demand for drugs is inelastic, then the total amount paid by drug users rises, even as the amount of drug use falls. By contrast, drug education reduces the demand for drugs from D1 to D2, as in panel (b). Because both price and quantity fall, the amount paid by drug users falls.
Advocates of drug interdiction might argue that the effects of this policy are different in the long run than in the short run, because the elasticity of demand may depend on the time horizon. The demand for drugs is probably inelastic over short periods of time because higher prices do not substantially affect drug use by established addicts. But demand may be more elastic over longer periods of time because higher prices would discourage experimentation with drugs among the young and, over time, lead to fewer drug addicts. In this case, drug interdiction would increase drug-related crime in the short run while decreasing it in the long run.