Chapter 9 - Inflation Flashcards
Basket of goods and services
Things people buy
Percentage change equation
(Level in new year - level in previous year) / level in previous year
Base year
Starting point from which we measure inflation. Always equal to 100
Index numbers
Have values around 100, are easier for estimating, unit free numbers
Inflation
Overall and ongoing rise in prices in an economy. Not related to change in relative prices or supply and demand changes
Rate of inflation
Percentage change of price levels over time
Consumer price index (CPI)
Prices in a fixed basket of goods and services that represents the purchases of the average family of four
Cost of living
Cost for a person to feel that their consumption provides an equal level of satisfaction or utility
Substitution bias
Inflation rate calculated using a fixed basket of goods over time tends to overstate the true rise in the cost of living, because it does not take into account that the person can substitute away from goods whose prices rise by a lot
Two problems with measuring cost of living
Substitution bias and quality/new goods bias
Quality/new goods bias
Inflation rate calculated using a fixed basket of goods over time tends to overstate the true rise in cost of living, because it does not take into account improvements in the quality of existing goods or the invention of new goods
8 components of CPI
Food, housing, apparel, transportation, medical care, recreation, education, and others.
Core inflation index
Calculated by taking the CPI and excluding volatile economic variables. Useful for the government, shows underlying trends
Difference between CPI and core inflation index
CPI helps households understand cost of living. Core inflation index helps government make important policy changes
Producer price index (PPI)
Prices paid for supplies and materials by producers of goods and services