Definition:
The Consumer Price Index (CPI) refers to a measure that examines the weighted average of prices of a basket of consumer goods and services, such as transportation, food, and medical care. It is calculated by taking price changes for each item in the predetermined basket of goods and averaging them. The prices in consideration are collected periodically to gauge the current economic landscape and inflation rates.
Examples:
- Annual Inflation Measurement: If the CPI for a certain year increases by 2% from the previous year, it means that there has been a 2% rise in the prices that consumers are paying for their basket of goods and services over one year.
- Cost of Living Adjustment: Many employment contracts and government benefit programs use CPI to adjust salaries or benefits to maintain their purchasing power in the face of inflation.
- Historical Comparison: The CPI can be used to compare how prices have evolved over time. For example, analysing the CPI can reveal trends in price stability or volatility over decades.
Frequently Asked Questions (FAQs):
What is the Consumer Price Index used for?
The CPI is primarily used to gauge inflation, adjust salaries and pensions, index tax brackets, and guide monetary policy decisions.
What is included in the CPI basket of goods?
The basket typically includes categories like housing, food and beverages, medical care, transportation, education, and communication.
Who calculates the CPI?
In the United States, the Bureau of Labor Statistics (BLS) calculates the CPI. Different countries have their respective institutions responsible for CPI calculations.
How often is the CPI published?
The CPI is usually released monthly by the BLS and similar institutions in other countries.
What is the difference between CPI and core CPI?
Core CPI excludes food and energy prices because these prices can be very volatile. The core CPI is thought to provide a more stable measure of inflation.
Related Terms with Definitions:
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Inflation: The rate at which the general level of prices for goods and services is rising, and subsequently, the purchasing power of currency is falling.
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Purchasing Power: The quantity of goods and services that can be purchased with a unit of currency.
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Producer Price Index (PPI): A measure of the average change over time in the selling prices received by domestic producers for their output.
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Cost-of-Living Index: A theoretical price index that measures relative cost of living over time or regions.
Online References:
- Bureau of Labor Statistics - CPI Page
- Investopedia - What Is the Consumer Price Index?
- Federal Reserve - Inflation and Prices
Suggested Books for Further Studies:
- “Inflation Matters: Economics, Politics, and the Imprint of History” by Robert Z. Aliber
- “Macroeconomics: Understanding the Wealth of Nations” by David Miles and Andrew Scott
- “Principles of Economics” by N. Gregory Mankiw
Accounting Basics: “Consumer Price Index (CPI)” Fundamentals Quiz
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