Econ - Chapter 11: Measuring the cost of living Flashcards
(20 cards)
Inflation
refers to a situation in which the economy’s overall price level is rising
Deflation
when overall price level is falling
How is inflation computed
Percentage change = (final -initial) initial
- uses the price index
Consumer Price Index (CPI)
measure of overall goods and services bought by a typical consumer
- reported by Bureau of Labor Statistics every month
- used to monitor changes in the cost of living over time
What does it mean when CPI increases
families need to spend more to maintain the same level of standard of living
How is CPI calculated?
Step 1: Fix the basket
Step 2: Find the prices
Step 3: Compute the basket’s cost
Step 4: Choose a base year and compute the index
Step 1: Fix the basjet
- What goods and services are most important for typical consumer?
- BLS identities a market basket of goods and services the typical consumer buys
Step 2: Find the price
Find the price of goods and service in the basket for each point in time
Step 3: Compute the basket’s cost
use the data on prices to calculate the cost of the basket of goods and services at different times
Step 4: Chose a base year and compute the index
- Designate 1 year as the base year
- Divide price of basket in 1 year by price in base year
CPI (year) = Price of basket(year)/ Price of basket(base year)
Problems with CPI
Since it is a fixed basket:
- substation bias
- introduction of new goods
- unmeasured quality changes
Therefore CPI is likely to overstate inflation
How to convert dollar values from year T into base year dollars
Amt(base yr) = Amt (yr T)/Price index (yr T)
Difference between CPI and GDP deflator
GDP deflator: reflects price of all goods and services produced domestically
CPI: reflects price of goods and services bought by cosumers
Imported consumer goods (indexes)
included in CPI, excluded from GDP deflator
Capital goods (indexes)
excluded from CPI, included in GDP deflator
The basket of CPI
fixed basket
The basket of GDP deflator
basket of currently produced goods and services
Nominal Interest Rate (i)
- not correct for inflation
- growth rate of the dollar value of deposit/ debt
Real Interest Rate (r)
- interest rate corrected for inflation
- growth rate of purchasing power of deposit/ debt
Interest relationship
r = i - inflation rate