Ch 18 Flashcards
(40 cards)
The Consumer Price Index (CPI)
is a measure of the cost of living during a particular period
The CPI measures
The cost of a standard basket of goods and services in a given year
relative to the cost of the same basket of goods and services in the base year
2010 is the base year for the CPI
Base year changes periodically
Calculating the CPI
CPI is the ratio of the cost of the base year basket of goods in the current year to the cost in the base year
Base year cost $940
2015 cost $1,175
CPI = 1175 / 940 = 1.25
A price index
measures the average price of a given quantity of goods and services relative to the price of the same goods and services in a base year
CPI measures the change in consumer prices
Other indices
Producer price index
Import / export price index
The rate of inflation
is the annual percentage change in the price level
The Great Depression
Period of falling output and prices
When inflation rates are
negative there is deflation
Deflation represents
a situation in which the prices of most goods and services are falling over time so that inflation is negative
A nominal quantity
is measured in terms of its current dollar value
A real quantity
is measured in physical terms
Quantities of goods and services
To compare values over time, use real quantities
Deflating a nominal quantity converts it to a real quantity
Divide a nominal quantity by its price index to express the quantity in real terms
Indexing
increases a nominal quantity each period by the percentage increase in a specified price index
Indexing prevents the purchasing power of the nominal quantity from being eroded by inflation
Indexing automatically adjusts
certain values, such as Social Security payments, by the amount of inflation
If prices increase 3% in a given year, the Social Security recipients receive 3% more
Indexing is sometimes included in labor contracts
Adjusting for Inflation
An indexed labor contract
First year wage is $12 per hour
Real wages rise by 2% per year for next 2 years
Relevant price index is 1.00 in first year, 1.05 in the second, and 1.10 in the third
Minimum Wage
- Because the minimum wage is not indexed to inflation, its purchasing power falls as prices rise
- Governments must raise the nominal minimum wage periodically to keep the real value of the minimum wage from eroding
CPI and Inflation
CPI and other indexes influence policy decisions and wage increases
Inflation may be overstated
Unnecessarily increases government spending
Underestimates increase in the standard of living
Suppose CPI indicates 3% inflation when cost of living actually increases 2%
Nominal income increases 3%, Real income increases 1% (3% nominal income-2% inflation)
CPI uses a fixed basket of goods and services
- When the price of a good increases, consumers buy less and substitute other goods
- Failing to account for substitution overstates inflation
The price level
is a measure of the overall level of prices at a particular point in time
Measured by a price index such as the CPI
The relative price
of a specific good is a comparison of its price to the prices of other goods and services
Example
Suppose we have a one-time doubling of the gas price
Overall price level and inflation increase by a small amount
The increase in the relative price of gasoline is large
Relative Prices
Relative prices can change markedly without corresponding changes in inflation
Prices transmit information about
The cost of production and
The value buyers place on buying an additional unit
Inflation creates static in the communication
Buyers and sellers can’t easily tell whether
The relative price of this good is increasing OR
Inflation is increasing the price of this good and all others
Deciding these issues requires market participants gather information – at a cost
Response to changing prices is tentative and slow