4. RESULTADOS Y ANÁLISIS
4.4. ESTUDIO FLUJO TURBULENTO, TUBO BANCADA EXPERIMENTAL
Economic indicator: A statistic (data) that shows the behaviour of an economic variable, usually over time.
Where do statistics come from? Statistics South Africa SARB
Newspapers and financial magazines GDP (Gross Domestic Product)
GDP: Total value of all final goods and services produced within the borders of a country in one year.
An increase in GDP will cause economic growth. GDP gives us an indication of:
o Economic growth
High economic growth is one of the main economic objectives of a country.
An increase in GDP is not always an indication of economic growth. IT could be because of a rise in prices (inflation).
Therefore, instead of working with GDP at current prices, we need to adjust GDP to constant prices (Real GDP).
Calculate GDP per capita to calculate whether an increase in economic welfare has occurred, i.e. if an increase in real GDP has kept up with population growth.
The relative importance of different sectors of the economy. Compare the contribution of different sectors over time.
Comparison of South Africa‘s growth to that of other countries. Full Employment
The aim of providing everyone who is willing to work at the current wage rate with a job.
Unemployment rate = Number of unemployed X 100 EAP
Factors that have impacted negatively on the South African labour market:
o Slow economic growth
o A drop in the rate of capital formation
o Oversupply of unskilled labour
o Net emigration of skilled labour
o Restructuring of the economy
o Relatively high wages (as compared to inflation)
o Labour legislation
o Influence of the unions
Inflation Rate
Price stability means that the rate at which prices increase should be as low as possible.
Usually expressed as the average rate of change in the prices of all goods and services, i.e. the annual rate of change of the economy‘s general price level. Usually done by using changes in the consumer price index (CPI).
Inflation rate = CPI year2 – CPI year1 X 100
CPI year1 1
CPI Inflation rate (%)
Year 1 100
Year 2 112 12
Year 3 120 7.1
Group Weight Index for (2000 = 100) Percentage change
between 2005 and 2006
2005 2006
Cigarettes, cigars and tobacco
1.21 158.0 171.4 +8.5
Clothing and footwear 3.64 93.8 89.1 -5.0
Housing 20.70 113.8 115.0 +1.1
Fuel and power 3.84 131.9 135.7 +2.9
Furniture and equipment 2.82 115.9 114.9 -0.9
Household operation 4.68 135.1 143.1 +5.9
Medical care and health expenses 6.90 159.8 170.1 +6.4 Transport 13.72 120.0 129.9 +8.3 Communication 2.86 128.4 125.3 -2.4 Recreation and entertainment 3.04 96.7 96.8 +0.1 Reading matter 0.36 130.5 134.9 +3.4 Education 3.38 144.4 156.2 +8.2 Personal care 3.92 131.1 135.6 +3.4 Other 3.26 102.4 102.4 0.0
CPI: All items 100.00 126.1 130.9 +3.8
The South African consumer price index 2005 and 2006, source: Stats SA, January 2007
CPIX = CPI excluding the effects of mortgage bond interest rates.
The monetary policy committee of the SARB meets every few months to consider inflationary conditions and to decide on suitable monetary policy options.
PPI predicts CPI inflation. PPI measures prices of:
o Goods that is imported when they enter the country. Foreign Trade
Exports serve to stimulate employment and imports serve to widen the choice of consumers. Year Exports as % of GDP Imports as % of GDP 2000 27.8 24.9 2001 30.0 26.1 2002 32.7 29.1 2003 27.9 26.0 2004 26.6 27.3 2005 27.1 28.6
Source: SARB QB, March 2006
Terms of trade
o Ratio of export to import prices. Exchange rate
o Changes in an exchange rate affect the prices that are paid for imports and earned by exports.
Current account balance
o Deficit could mean that a country is living beyond its means OR that the country is developing rapidly
OR that it has been granted credit by other countries to finance imports
o Surplus can indicate a strong competitive economy OR a deteriorating economy
OR one with import substitution Productivity
Labour productivity: Real GDP . Number of workers unemployed
Remuneration per worker
o Relationship between wages and productivity is crucial to
Employers → relates to profits
Employees →relates to standard of living Monetary Conditions
Money supply
o M1A = coins and notes in circulation + bank accounts that can be used to make payments
o M1 = M1A + other demand deposits
o M2 = M1 + short term deposits + medium term deposits in financial institutions
o M3 = M2 + long term deposits
o M3 is the indicator used to set guidelines for the money supply in South Africa by the SARB as part of its monetary policy.
Interest rates
o Price of money: charge made for the use of borrowed money.
o Money is lent or borrowed on financial markets:
money market (short term)
capital / bond market (long term)
o Repo rate: SARB sets the repo rate and supplies whatever quantity of money is demanded by commercial banks at that price.
o Prime rate: the lowest rate at which a bank will lend money to its best customers.
o Nominal interest rates – quoted interest rates
Real interest rates – interest rates that have been adjusted for inflation
JSE All Share index: shows what is happening to the overall value of all shares quoted on the JSE.
o Dow Jones – New York
o FTSE – London
o DAX – Frankfurt
o CAC40 – Paris
o Hang Seng – Hong Kong
o Nikkei – Tokyo
o NASDAQ – no physical exchange. Trades in technology stocks on networked computers.
SECTION C: HOMEWORK
QUESTION 1: 17 minutes (Source: Economics For All)
1.1 List three economic indicators used to measure the performance of the economy. (6)
1.2 Distinguish between real and nominal GDP. (6)
1.3 Name 5 factors that have had a negative impact on South Africa‘s labour market. (10)
1.4 Distinguish between CPI and CPIX. (6)
[28]
QUESTION 2: 15 minutes (Taken from The Answer Series)
2.1 Name THREE economic indicators. (6)
2.2 Discuss GDP and Full employment as economic indicators. (16) [22]
SECTION D: SOLUTIONS AND HINTS TO SECTION A
QUESTION 1: 10 minutes (Taken from DoE Nov.2009)
GDP:
• GDP is total value of all final goods and services produced within the borders of a country in one year
• Measures total production of an economy • Formula: GDPt – GDPo X 100
GDPo 1
• Increased GDP will cause economic growth • Gives an indication of:
- economic growth
- relative importance of different sectors in economy
- South Africa‘s economic growth in relation to growth of other countries
- Real GDP measures growth performance of economy / GDP adjusted with price increases
- Real GDP used in forecasting real GDP used to describe business cycles - Per capita real GDP used to indicate economic development, indicate living
standards and compare living standards (Max. 4 x 2) Employment:
• Full employment refers to aim of providing everyone who is willing to work at current wage rate with a job
• Increase employment to decrease loss of production – produce more goods and services
• Unemployment is calculated by expressing number of people who are willing and able to work, but do not have a job, as a percentage of the total number of people that are willing and able to work (EAP)
•Employment rate – calculated by expressing the number of employed people as a percentage of the EAP / labour force participation rate
• Employment is important for the forecasting of trends – employment in the various sectors
• As well as the calculations of productivity / unemployment / employment rate