Tag: price elasticity of demand

On 10 August the world sugar price reached a 28-year high. The price has risen by 88 per cent since the beginning of the year and 20 per cent in just the previous two weeks. The following articles explain why sugar prices have soared and examine the implications for the future.

Sugar Rallies 40% in Options Pointing to 1981 Peak Bloomberg (10/8/09)
Sugar hits 18-year high on drought threat Financial Times (10/8/09)
Sugar prices head towards the sky Financial Times (28/7/09)
Sugar price reaches 28-year high BBC News (10/8/09)
Food Companies Ask USDA to Boost Sugar-Import Quotas Bloomberg (7/8/09)
Sugar Monthly Prices Index Mundi

Questions

  1. Using a supply and demand diagram explain why sugar prices have risen recently. Distinguish between shifts in and movements along the demand and supply curves.
  2. What is the relevance of the price elasticity of demand and supply of sugar in explaining the magnitude of the price movements?
  3. What factors are likely to have the biggest influence over movements in the price of sugar over the coming months?
  4. How is speculation likely to affect (a) the volatility and (b) the level of the price of sugar over the coming weeks?

With recession biting, many people are cutting back on spending. This has not been even across products, however. People have tended to shift from more luxurious products, such as foreign holidays and branded products, to holidays at home and supermarkets’ own-brand products (see Shoppers opt for supermarket brands Financial Times (4/8/09)). There has also been a decline in spending on consumer durables, such as cars, furniture and kitchen appliances.

One sector that has fared better than most, however, is the teenage market. “So far it seems teenagers have not cut back on their shopping. Teen-targeted retailers such as Primark, New Look, H&M, Asos and Hot Topic are all weathering the recession better than rivals aimed at an older demographic.” This is a quote from the first of the two linked articles below, which look at this market and its future prospects.

Teenage spenders struggle to learn BBC News (4/8/09)
Hollister: the shop that smells like teen spirit Times Online (5/8/09)

Questions

  1. How is spending on particular products during a recession related to their income elasticity of demand? How does the income elasticity of demand depend on the length of the time period under consideration?
  2. Why has the teenage market been less susceptible to the recession than many other markets?
  3. To what extent will being ‘bargain savvy’ be enough for teenagers to survive the recession without having to make substantial changes in spending patterns? Consider the concept of price elasticity of demand in your answer.

Changes in the price of oil have effects throughout the economy. And it’s not just on the obvious things, such as petrol prices, energy bills and rail, bus and air fares. Most companies are significantly affected by the price of oil, as oil is a key input into their production, whether for transporting their inputs or the goods they produce, or as plastics or other petrochemicals. This is why the price of oil receives so much attention: we’re all affected by it. You will have seen the price of petrol changing dramatically over the past year or so and this is largely due to changing oil prices. The price of oil peaked at $147 a barrel in July 2008 and fell as low as $32 a barrel in December 2008.

So what is it that causes these changes in oil prices and what does it mean for the world’s economies? Read the following articles, which discuss these issues, and look at recent developments in the oil industry.

First fall in oil use since 1993 BBC News (10/6/09)
Trump’s world view Fox News, Interview between Greta van Susteren and Donald Trump (30/6/09) Oil settles above $71; China to boost reserves The Associated Press, Dirk Lammers (29/6/09)
Nigeria worries push up oil price BBC News (29/6/09)
Oil up to near $72 on dollar fall, Nigeria attack Town Hall, Pablo Gorondi (30/6/09)
Chinese demand forecast to boost oil price The Star Phoenix, Joanne Paulson (30/6/09)
Lower oil price hits Total profit BBC News (6/5/09)
Oil price hovers at $70 amid pipeline attacks Financial Times, Miles Johnson, Javier Blas, London (27/6/09)
What is going on in the oil market? BBC News (27/10/08)
Rising oil prices poses threat to recovery, Alistair Darling warns Telegraph (12/6/09)
Fears of oil crunch recede as recession knocks down global demand The Independent, Sarah Arnott (30/6/09)

Questions

  1. How is the price of oil determined? Give 2 examples of factors that could cause (a) the price of oil to increase and (b) the price of oil to decrease.
  2. How are company profits affected by the changing price of oil?
  3. OPEC is an oil cartel. What are the factors that make collusion more likely to succeed? Do they apply to OPEC?
  4. When prices of oil increase, why do we still use similar amounts of energy; still buy petrol? What’s so special about this commodity? Think about elasticity.
  5. How is the price and consumption of oil affected by the macroeconomic situation?

In the article below Tim Harford (the Undercover Economist) looks at rationality in the purchase of cigarettes. He consider whether healthy and happy smokers are the same thing and the extent to which smokers would be happier if cigarettes were more expensive.

Why smokers are happier when cigarettes cost more MSN Slate (17/5/08)

Questions

1. Identify the principal factors that determine the level of demand for cigarettes.
2. Given the factors identified in part (a), discuss the likely value of the price elasticity of demand for cigarettes.
3. Discuss the extent to which higher cigarette prices would make smokers happier.

Increased demand for milk and milk-based products has led to the EU agreeing to increase milk quotas by 2% from April. The move was backed by most countries but Germany and Austria opposed the move on the basis that increased quotas would push milk prices down and therefore hit many farmers.

EU farmers to produce more milk BBC News Online (17/3/08)

Questions

1. Using diagrams as appropriate, show how EU milk quotas affect the equilibrium price and level of output in the market for milk.
2. Analyse the likely impact of a 2% increase in quotas on the equilibrium price and level of output in the market for milk. (n.b. as part of your answer you may like to consider the likely value of the price elasticity of demand for milk and the impact this is likely to have on the market price.)
3. Discuss the effectiveness of using milk quotas in maintaining income levels for dairy farmers.