Price Level
1. Definition
The Price Level refers to the average of current prices of goods and services across the entire economy. * It is the inverse of Purchasing Power. When the price level rises, each unit of currency buys fewer goods.
2. Key Metrics
- CPI (Consumer Price Index): Measures the weighted average of prices of a basket of consumer goods and services (transportation, food, medical care). It is the most common gauge of inflation.
- PCE (Personal Consumption Expenditures): The Federal Reserve's preferred measure of inflation. It covers a broader range of goods and adjusts for consumer behavior changes (substitution) more quickly than CPI.
- PPI (Producer Price Index): Measures price changes from the perspective of the seller (wholesaler/manufacturer).
3. Phenomena
- Inflation: A sustained increase in the general price level.
- Deflation: A sustained decrease in the price level. It often leads to lower production and higher unemployment (Economic contraction).
- Hyperinflation: Out-of-control inflation where currency becomes worthless (e.g., Venezuela, Zimbabwe).
4. Impact on Markets
- Interest Rates: The primary job of Central Banks (like the Fed) is price stability. If the price level rises too fast, they hike interest rates to cool down demand.
- Bond Yields: High inflation erodes the fixed income from bonds, causing bond prices to fall and yields to rise.