Price inflation Flashcards
Define
inflation
A sustained or ongoing increase in the general level of prices in an economy.
Define
hyperinflation
An inflation rate that is very high and out of control, as result of which confidence in a currency can be lost because its real value is eroded very quickly.
Define
Consumer Price Index (CPI)
or
Retail Price Index (RPI)
A measure of inflation based on changes in the average price of a basket of goods and services purchased by a ‘typical’ household and which expresses these average prices as an index number series.
CPI and RPI are sometimes used in addition to one another to measure inflation.
What is the difference between CPI and RPI?
The methodology used for each index series is the same, but the products they include and the types of consumer they cover can differ. As a result they can provide slightly different measures of inflation.
How do you calculate price index?
Year 0 (base year)
- Identify the basket of goods and services purchased by the ‘typical’ family
- Monitor the ‘average’ price of each item in the basket at a sample of different retail outlets
- Monitor how much the ‘typical’ family spends on each item in the basket
- Weight the average price of each item by the proportion of household expenditure spent on it
- Add up all the weighted average prices. This is the price of the basket.
- Set the total weighted average price of the basket equal to 100. This is the price index.
Year 1 onwards
- Repeat steps 1 to 5
- Divide weighted average price by base year total average price and multiply by 100. This is the price index.
- Minus 100 to give % inflation rate
What are the three main uses of price indicies?
- As an economic indicator
- As a price deflator
- Indexation
Define
indexation
The automatic adjustment of a monetary variable, such as wages, taxes, welfare or pension benefits, by the increase in the consumer or retail prices index, so that its value rises at the same rate as inflation, i.e. so that the real value of the variable is kept constant.
What are some problems with price indicies?
- A CPI must take into account:
- The changes in the ‘typical’ household and the goods and services it buys
- Changes in the quality of products
- How/where households buy products (e.g. online shopping, television shopping channels
- Deciding how and when to make these changes is difficult.
- International comparisons of consumer price inflation are difficult to make because household composition and spending patterns can differ significantly by country.
What causes inflation?
Economists today tend to agree that the main cause of inflation is ‘too much money chasing too few goods’
i.e. if the money supply increases at a faster rate than the aggregate supply of goods and services then the general level of prices will rise
There are three main types of inflation:
- Demand-pull inflation
- Cost-push inflation
- Imported inflation
What monetary rule can a government follow if it wants to keep inflation low and stable in its economy?
The government should only allow the supply of money to expand at the same rate as the increase in real output or real GDP over time.
Define
stagflation
An economic situation in which both price inflation and unemployment are rising at the same time.
This may be caused by government policy if the monetary rule is not followed.
What is demand-pull inflation?
A persistent increase in the general level of prices resulting from a continued excess of demand over supply.
An increase in aggregate demand will cause market prices to increase and inflation to rise if firms are unable to increase the supply of goods and services at the same rate as demand.
To finance an increase in aggregate demand, consumers and firms may borrow more from banks and/or the government can issue more notes and coins. Both methods involve increasing the money supply.
What is cost-push inflation?
Persistently rising general price levels caused by increasing production costs passed on to consumers.
The cost of producing goods and services may rise due to:
- workers demanding increased wages not matched by increased productivity
- rise in costs of other factors of production
However, as wages rise the demand for labour will tend to fall and workers could be made unemployed. To prevent a rise in unemployment the government may expend the supply of money to boost aggregate demand.
Inflation may cause a wage-price spiral.
What is imported inflation?
A sustained increase in the prices of products bought from overseas producers either resulting from their rising costs or a fall in the exchange rate against overseas currencies.
What is a wage-price spiral?
An economic situation in which workers demand higher wages to compensate them for the impact of rising inflation on the real value of their earnings and in so doing force producers to pass on increased wage costs to consumers in higher prices, resulting in even higher wage demands, and so on.