Introduction to Macroeconomics

Macroeconomics studies the economy as a whole, dealing with aggregate variables such as national income, total employment, the general price level, aggregate consumption and investment, rather than with individual consumers or firms. In this chapter you will learn how macroeconomics emerged as a separate branch after the Great Depression of 1929, when output in the United States fell sharply and unemployment rose from about 3 percent to about 25 percent. Classical economists believed markets would automatically restore full employment, but John Maynard Keynes, in his General Theory of 1936, argued that a shortfall in aggregate demand could keep an economy depressed for a long time. You will study the features of a capitalist economy: private ownership of the means of production, production for profit in a market, and the sale and purchase of labour services at a wage. The chapter introduces the four major sectors of an economy, households, firms, the government and the external sector, and how they interact. You will also compare the approaches of microeconomics and macroeconomics and see why governments care about growth, unemployment and inflation.

Detailed Worksheet: Introduction to Macroeconomics Section A - Definitions (10 marks) 1. Define macroeconomics. Name any two macroeconomic variables. (2 marks) 2. What was the Great Depression? Mention two of its effects on the economy of the United States. (2 marks) 3. State two features of a capitalist economy. (2 marks) 4. Who are entrepreneurs? What is their role in a capitalist economy? (2 marks) 5. Distinguish between microeconomics and macroeconomics on two bases. (2 marks) Section B - Calculations and Applications (15 marks) 6. The real GDP of a country was Rs 200 lakh crore in one year and Rs 214 lakh crore in the next year. Calculate the growth rate. Is this a micro or macro variable? Give reason. (3 marks) 7. A country has a labour force of 50 million, of whom 46 million are employed. Calculate the unemployment rate. If 1 million more people find jobs with the labour force unchanged, find the new rate. (3 marks) 8. The consumer price index rose from 120 to 126 in one year. Calculate the rate of inflation. Explain why the government is concerned about this macroeconomic variable. (3 marks) 9. In an economy, factor incomes are (Rs crore): wages 600, rent 100, interest 150 and profit 150. Calculate the share of each factor income in total income as a percentage. Which sector of the economy receives each of these incomes? (3 marks) 10. A capitalist firm earns sales revenue of Rs 1,000 crore. It pays wages of Rs 500 crore, rent of Rs 100 crore and interest of Rs 100 crore. Calculate its profit. If it reinvests 60% of the profit in new machinery, how much is reinvested? Explain why reinvestment is a feature of capitalism. (3 marks) Section C - Diagrams (10 marks) 11. Draw a chart showing the four sectors of a macroeconomy (households, firms, government and external sector) and the main flows between them, such as factor services, wages, taxes, exports and imports. (4 marks) 12. Draw a simple line graph showing the fall in output and rise in unemployment in the United States from 1929 to 1933, and label the trend. (3 marks) 13. Draw a chart comparing microeconomics and macroeconomics, with examples of the variables studied in each. (3 marks) Section D - Analysis and Higher-order Thinking (15 marks) 14. Explain why classical economists believed that full employment would be restored automatically, and how the Great Depression challenged this view. Explain Keynes' main argument about aggregate demand. (5 marks) 15. Explain the role of the government and the external sector in a modern economy. How do government decisions on taxes and spending, and changes in exports and imports, affect households and firms? (5 marks) 16. A student argues: What is true for an individual is always true for the whole economy. Analyse this claim using the example of saving or wage cuts, and explain why macroeconomics is needed as a separate study. (5 marks) Instructions: Time allowed 2 hours. Attempt all sections. Show working for all percentage calculations. Draw neat, labelled charts.