Measuring Inflation

Marginal Revolution University
10 Jan 201705:23
EducationalLearning
32 Likes 10 Comments

TLDRThis video delves into the concept of inflation, illustrating it as an elevator with ping pong balls representing individual prices. It explains inflation as the overall increase in average prices, measured by a price index like the Consumer Price Index (CPI), which considers a basket of consumer goods and services. The CPI is a weighted average, emphasizing the impact of major items. The video demonstrates how to calculate inflation rates using historical CPI data from the United States and contrasts it with extreme cases like Venezuela and Zimbabwe, highlighting the variability of inflation rates over time and across countries. It concludes with a teaser for further exploration into the causes and effects of inflation.

Takeaways
  • ๐Ÿ“ˆ Inflation is the general increase in the average price level of goods and services over time.
  • ๐Ÿข The Consumer Price Index (CPI) is a weighted average of prices of a basket of goods and services commonly purchased by consumers in the United States.
  • ๐Ÿ“Š Price indexes like CPI measure inflation by comparing the average price level over different periods.
  • ๐Ÿ“Š The CPI is set to 100 for the average price level in the base years of 1982 to 1984.
  • ๐Ÿ’ฐ Inflation rates are calculated as the percentage change in the price index over a period, typically a year.
  • ๐Ÿ“Š By mid-2016, the CPI had risen to 239, indicating that average prices had more than doubled over 33 years.
  • ๐Ÿ’ผ Wages have also increased over time, often outpacing the rate of inflation, which means people are not necessarily worse off despite rising prices.
  • ๐Ÿ“ˆ Historical data shows that the United States experienced high inflation rates in the 1960s and 1970s, peaking around 1980 at over 14% per year.
  • ๐Ÿ“‰ After 1980, U.S. inflation rates decreased to an average of about 2.5% for many years.
  • ๐Ÿ“‰ There was a brief period of deflation during the 2009 recession when inflation turned negative.
  • ๐ŸŒ Comparatively, the U.S. has had a relatively low inflation rate on a global scale, unlike countries like Venezuela and Zimbabwe, which have experienced extreme hyperinflation.
Q & A

  • What is inflation and how is it typically represented?

    -Inflation is the increase in the average price level of goods and services in an economy over time. It is typically represented by an elevator going up, where the average price level is rising.

  • How is the average level of prices measured in an economy?

    -The average level of prices is measured using a price index, which is the average price from a large and representative basket of goods and services.

  • What is the Consumer Price Index (CPI) and how is it constructed?

    -The Consumer Price Index (CPI) is a price index that measures the average change over time in the prices paid by urban consumers for a market basket of consumer goods and services. It is a weighted average, with major items like housing having a greater impact on the index than minor items like toothbrushes.

  • How can the inflation rate be calculated?

    -The inflation rate can be calculated as the percentage change in the price index over a period of time, such as a year.

  • What does the CPI graph from the FRED database represent?

    -The CPI graph from the FRED database represents the Consumer Price Index over time, with the base period of 1982 to 1984 set to have an average price level of 100.

  • How did the CPI change from 1973 to 1974 according to the script?

    -According to the script, the CPI increased from 44.425 in 1973 to 49.317 in 1974.

  • What was the calculated inflation rate for the United States in 1974?

    -The calculated inflation rate for the United States in 1974 was 11.01%.

  • How can the annual inflation rate be visualized using FRED?

    -By changing the units to percent change from one year ago in the FRED database, the annual inflation rate can be visualized over a period of time, from 1948 to 2016 in the script's example.

  • What was the peak inflation rate in the United States around 1980?

    -The peak inflation rate in the United States around 1980 was a little over 14% per year.

  • How did inflation rates change after 1980 in the United States?

    -After 1980, inflation rates in the United States fell to an average of about 2.5% for many years.

  • What is the comparison made between the United States and Venezuela regarding inflation?

    -The comparison made between the United States and Venezuela is that while the U.S. had a relatively low inflation rate by world standards, Venezuela experienced a much higher inflation rate, with 180% in 2015 and an estimated 500% or higher in 2016.

  • Why might a country like Zimbabwe be considered a hyperinflation leader?

    -Zimbabwe is considered a hyperinflation leader because it hit rates of billions of percent per month at its peak hyperinflation, as mentioned in the script.

Outlines
00:00
๐Ÿ“ˆ Understanding Inflation and its Measurement

This paragraph introduces the concept of inflation and explains how it is measured. It compares price shifts to ping pong balls in an elevator, emphasizing that inflation occurs when the average price level rises. The paragraph details the use of a price index, such as the Consumer Price Index (CPI), which is a weighted average of a basket of goods and services commonly purchased by consumers in the United States. The CPI is used to calculate the inflation rate by measuring the percentage change in the index over time, typically a year. The paragraph also provides a historical perspective on inflation rates in the United States, using data from the Federal Reserve Economic Data (FRED) to illustrate the changes in CPI and inflation rates over several decades, including a peak in the 1980s and a more stable period post-1980. It concludes with a comparison to Venezuela's high inflation rate and hyperinflation in Zimbabwe, setting the stage for further discussion on the causes and consequences of inflation.

05:01
๐ŸŽ“ Engaging with Additional Resources

The second paragraph serves as a call to action for viewers to engage further with the material. It encourages viewers to solidify their understanding of the topic by attempting practice questions and suggests moving on to the next video for more macroeconomic concepts. Additionally, it invites viewers to explore other popular videos from Marginal Revolution University, providing a pathway for continued learning and engagement with economic topics. The paragraph ends with a motivational note, implying that the viewer is progressing towards mastering economics, accompanied by a musical cue that signifies the conclusion of the video.

Mindmap
Keywords
๐Ÿ’กInflation
Inflation refers to the rate at which the general level of prices for goods and services is rising, and subsequently, the purchasing power of currency is falling. In the video, inflation is likened to an elevator going up, indicating that the average price level is increasing over time. The script uses the example of the United States' CPI to illustrate how inflation is measured and provides historical data showing the rise in the CPI from 1973 to 1974, calculating an inflation rate of 11.01% for that period.
๐Ÿ’กPrice Index
A price index is a measure that reflects the average level of prices of a basket of goods and services over time. The video explains that the CPI is a type of price index that is used to measure inflation. It is calculated based on a weighted average of thousands of consumer goods and services, with more weight given to items that represent a larger portion of consumer spending, such as housing.
๐Ÿ’กConsumer Price Index (CPI)
The Consumer Price Index (CPI) is a specific type of price index that tracks the changes in prices of a basket of goods and services purchased by consumers. The video script uses the CPI as a key metric to discuss inflation in the United States, highlighting how it is calculated and how it has changed over several decades, including the significant rise in the CPI from 1973 to 1974.
๐Ÿ’กWeighted Average
A weighted average is a mathematical average in which each piece of data is multiplied by a weight to reflect its relative importance. In the context of the CPI, the video explains that it is a weighted average because the price change of major items like housing has a greater impact on the overall index than minor items like toothbrushes.
๐Ÿ’กInflation Rate
The inflation rate is the percentage change in a price index over a specified period of time, typically a year. The video script demonstrates how to calculate the inflation rate using the CPI, showing an example from 1973 to 1974 where the CPI increased, resulting in an inflation rate of 11.01%.
๐Ÿ’กPercentage Change
Percentage change is a way to express how much a quantity has increased or decreased, relative to its initial value. The video script uses the concept of percentage change to measure the inflation rate, showing how the CPI has changed from one year to the next, which is a direct way to observe inflation.
๐Ÿ’กWages
Wages refer to the compensation paid to employees for the work they perform. In the video, it is mentioned that wages have also increased over time, which is an important factor to consider when discussing inflation because if wages rise faster than prices, the purchasing power of workers can actually increase despite inflation.
๐Ÿ’กDeflation
Deflation is the opposite of inflation; it occurs when the general price level of goods and services is falling. The video script briefly mentions deflation in the context of the 2009 recession, indicating a period when prices were decreasing, which is less common than inflation.
๐Ÿ’กHyperinflation
Hyperinflation is a term used to describe a period of extremely high inflation, typically characterized by a rapid and out-of-control increase in the general price level. The video script contrasts the inflation rates of the United States with countries like Venezuela and Zimbabwe, which have experienced hyperinflation, with Zimbabwe reaching billions of percent per month at its peak.
๐Ÿ’กVenezuela
Venezuela is used in the script as an example of a country experiencing extreme inflation. The video mentions that in 2015, the inflation rate in Venezuela was 180%, and it was projected to reach 500% or higher in 2016, illustrating the concept of hyperinflation.
๐Ÿ’กZimbabwe
Zimbabwe is cited in the video as an example of a country that has experienced hyperinflation to an extreme degree. The script notes that Zimbabwe's inflation rate reached billions of percent per month at its peak, making it a case study for understanding the concept of hyperinflation.
Highlights

Inflation is defined as the average price level going up, likened to an elevator moving upwards.

Price index is used to measure the average level of prices, representing a basket of goods and services.

Different price indexes are based on different baskets, reflecting various market segments.

The Consumer Price Index (CPI) is a weighted average of thousands of goods and services in the U.S.

Major items like housing have a greater impact on CPI than minor items such as toothbrushes.

Inflation rate is measured as the percentage change in the price index over time, typically a year.

The graph from 'Inflation United States FRED' shows the CPI, with a base of 100 set between 1982 and 1984.

By mid-2016, the CPI had risen to 239, indicating more than double the average price over 33 years.

Wages have also increased over time, often outpacing the rise in prices.

Editing the data series on FRED allows for viewing annual inflation rates.

In 1974, the inflation rate in the U.S. was calculated to be 11.01%, a significant increase from the previous year.

Inflation rates in the U.S. peaked around 1980 at over 14% per year, then declined to about 2.5% on average.

Deflation briefly occurred during the 2009 recession, with negative inflation rates.

Venezuela's inflation rate in 2015 reached 180%, with estimates for 2016 suggesting over 500%.

Zimbabwe experienced hyperinflation with rates in the billions of percent per month at its peak.

The video will delve into the causes and consequences of inflation in more detail in the next segment.

Marginal Revolution University offers practice questions and further macroeconomics videos for viewers.

Transcripts

Browse More Related Video

Introduction to inflation | Inflation - measuring the cost of living | Macroeconomics | Khan Academy

How the Consumer-Price Index Measures Inflation | WSJ

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Measuring the Cost of Living

Example question calculating CPI and inflation | AP Macroeconomics | Khan Academy

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Related Tags
InflationCPIEconomicsPrice IndexSupply DemandHousing CostsToothbrushesWage GrowthVenezuelaHyperinflation