A CASE STUDY THE INFLATION RATE Date of Announcement September 16, 2003 Dates of Future Announcements October 16, 2003 Announcement The seasonally adjusted rate of change in the consumer price index (CPI) during the month of August 2003 was 0.3 percent (an increase of four-tenths of one percent). The rate of increase in the consumer price index over the past twelve months was 2.2 percent. In August, the core consumer price index, which excludes energy and food prices, increased 0.1 percent. Over the last twelve months, the core index increased 1.3 percent. Information for Teachers All paragraphs in italics will not appear in the student version of the inflation case study. This case is the first inflation case study of the fall. More advanced concepts and questions will be added throughout the fall semester. There are interactive questions at the end of the case study. Correct answers will pop-up as students answer the questions. Notes of explanation follow in the teachers’ version of the case. The original press release can be found at www.bls.gov/news.release/cpi.nr0.htm. Goals of Case Study The goals of the Inflation Case Studies are to provide teachers and students: access to easily understood, timely interpretations of monthly announcements of rate of change in prices in the U.S. economy; descriptions of major issues surrounding the data announcements; brief analyses of historical perspectives; questions and activities to use to reinforce and develop understanding of relevant concepts; and 1 a list of publications and resources that may benefit classroom teachers and students interested in exploring inflation. Definitions of Inflation Inflation is a sustained increase in the overall level of prices. The most widely reported measurement of inflation is the consumer price index (CPI). The CPI measures the cost of a fixed basket of goods relative to the cost of that same basket of goods in a base (or previous) year. Changes in the price of this basket of goods approximate changes in the overall level of prices paid by consumers. Brief Explanation of the CPI "The Consumer Price Index (CPI) is a measure of the average change in prices over time of goods and services purchased by households. The CPI is based on prices of food, clothing, shelter, and fuels, transportation, fares, charges for doctors' and dentists' services, drugs, and other goods and services that people buy for day-to-day living.” “Prices are collected in 87 urban areas across the country from about 50,000 housing units and approximately 23,000 retail establishments - department stores, supermarkets, hospitals, filling stations, and other types of stores and service establishments. All taxes directly associated with the purchase and use of items are included in the index. Prices of fuels and a few other items are obtained every month in all 87 locations. “Prices of most other commodities and services are collected every month in the three largest geographic areas and every other month in other areas. Prices of most goods and services are obtained by personal visits or telephone calls of the Bureau's trained representatives. For more information on the Bureau of Labor Statistics, visit (www.bls.gov)." (ftp://146.142.4.23/pub/news.release/cpi.txt) Data Trends In August, the Consumer Price Index increased by 0.3 percent. The CPI increased by 0.2 percent in June and again by the same amount in July. In August, increases in the prices of energy and transportation were largely responsible for the increased rate of inflation. Food prices also increased during the month. The core rate of inflation (an increase of 0.1 percent in the core CPI in August) represents the consumer price index without the influences of changes in the prices of food and energy, which can fluctuate widely from month to month. The August level compares to a 0.2 percent increase in the core rate of inflation for July and a steady index in June. Figure 1 below shows recent inflation data reported for each month. Inflation increased in 1999 and 2000 when compared to1998, slowed throughout much of 2001, 2 and then increased slightly in 2002 and 2003. What is really quite obvious from Figure 1 is that the changes in inflation from month to month are much more dramatic from 1999 on, when compared to 1998. The increased volatility is primarily due to fluctuations in the prices of oil and food. The core rate of inflation (excluding food and energy) gives a much better idea of longer-term trends and that is why it is often featured in news reports. See figure 2. Figure 1 Figure 2 Compared to the rates of inflation in the 1970s and much of the 1980s, the current rate of inflation is quite low. See figure 3 below. Few observers would describe the most recent rates as high and they are not, when compared to those of the past thirty years. Other observers would describe the current experience as no or zero inflation. Inflation is not a current problem or a major concern. Figure 3 The Consumer Price Index The seasonally adjusted consumer price index in August was 184.5. The price index was equal to 100 during the period from 1982 to 1984. The interpretation is that prices in market basket of goods purchased by the typical consumer increased from the 19821984 period to August 2003 by 84.5 percent. Changes in the CPI are usually reported in newspapers and television news as percentage changes in the CPI on a monthly basis. For example, the CPI in August was 184.5, compared to 183.9 in July. The increase in prices from July to August was (184.5-183.9) / 183.9 = 0.0033 or a monthly inflation rate of .0.33 percent. It is reported to the nearest one-tenth of a percent, in this case, 0.3 percent. However, inflation rates are normally discussed as annual rates of change in price levels. To convert the monthly change into an annual rate, you could simply multiply the monthly rate by 12. This approximates an annual inflation rate of (0.3)(12) = 3.6 percent. A slightly more accurate measurement of the annual inflation rate is to compound the monthly rate, or raise the monthly rate of increase, plus one, to the 12th power. Month August September Price Level 184.5 183.9 Monthly Inflation Rate 184.5-183.9 = 0.0033 or 0.3 % 183.9 Annual Inflation Rate 1.003312 = 1.0398 or 4% 3 An Exercise for Understanding the Definition of Inflation The following question and answer appeared in a recent publication of a major financial firm. “Have you experienced inflation recently? How was the inflation caused? “Suggested answer: Recent increases in gas prices; prices of fruits and vegetables varying with seasons; bathing suits costing more in the spring and summer, movie ticket prices being less or more depending on the area….” Can you evaluate the question and answer? A better analysis focuses on the definition of inflation. Inflation is a sustained increase in the overall level of prices. In a market economy, prices vary in different seasons and in different areas. There are always some prices increasing and others decreasing as demand and supply conditions change in the markets. Inflation is an increase in average or overall price levels. It is not increases in specific markets or differences in prices in seasons or areas as described in the above question and answer. An interesting exercise is to ask students to take a sample of prices at several stores and calculate a price index. Do the same one month later and calculate a new index and a monthly and annual rate of inflation. A hypothetical interactive exercise is at the end of this case study. Costs of Inflation Understanding the costs of inflation is not an easy task. There are a variety of myths about inflation. There are debates among economists about some of the more serious problems caused by inflation. A number of exercises in National Council on Economic Education publications, student workbooks, and textbooks should help students think about the consequences of inflation. 1. High rates of inflation mean that people and business have to take steps to protect their financial assets from inflation. The resources and time used to do so could be used to produce goods and services of value. Those goods and services given up are a true cost of inflation. 2. High rates of inflation discourage businesses planning and investment as inflation increases the difficulty of forecasting of prices and costs. As prices rise, people need more dollars to carry out their transactions. When more money is demanded, interest rates increase. Higher interest rates can cause investment spending to fall, as the cost of 4 investing increases. The unpredictability associated with fluctuating interest rates makes customers less likely to sign long-term contracts as well. 3. The adage “inflation hurts lenders and helps borrowers” only applies if inflation is not expected. For example, interest rates normally increase in response to anticipated inflation. As a result, the lenders receive higher interest payments, part of which is compensation for the decrease in the value of the money lent. Borrowers have to pay higher interest rates and lose any advantage they may have from repaying loans with money that is not worth as much as it was prior to the inflation. 4. Inflation does reduce the purchasing power of money. 5. Inflation does redistribute income. On average, individuals' incomes do increase as inflation increases. However, some peoples’ wages go up faster than inflation. Other wages are slower to adjust. People on fixed incomes such as pensions or whose salaries are slow to adjust are negatively affected by unexpected inflation. A Market Basket of Goods and Services The Consumer Price Index measures prices of goods and services in a market basket of goods and services that is intended to be representative of a typical consumer's purchases. The percentages that are currently used to describe the categories of goods and services in that market basket are as follows. Housing Transportation Food and beverages Medical care Recreation 41 % 17 % 16 % 6% 6% Clothing Communication Education Other goods and services 4% 3% 3% 4% Interactive questions for students 1. What is inflation? 2. Calculate a consumer price index in 2002 for the following market basket of goods (using 2002 as a base year). 2002 3 boxes of cheerios $4.00 each 2 pounds of bananas $1.00 per pound 2 gallons of milk $3.00 per gallon 2003 5 4 boxes of cheerios $5.00 each 1 pounds of bananas $2.00 per pound 2 gallons of milk $3.00 per gallon 3. Calculate a consumer price index in 2003 for the market basket of goods (using 2002 as a base year). 4. What was the rate of inflation from 2002 to 2003? Answers to go with interactive questions (pop-up answers). 1. 2. 3. 4. A continual increase in the average price level. 100. 125. 25 percent. Notes to teacher. 1. The important points are that most prices or average prices rise and that the increase continues and is not just a one-time increase. 2. For the base year, the price index is calculated by first taking the 2002 quantities times the 2002 prices. As it is the base year, that number is divided by itself and multiplied by 100. 3. The price index is calculated by first taking the 2002 quantities times the 2002 prices (as in question 2). The 2003 prices are then multiplied by the 2002 quantities. Then the latter (the amount spent if only the prices change) is divided by the 2002 prices times 2002 quantities and multiplied by 100. ($25/$20) x 100 = 125. The most common mistake will be to calculate the second year with the 2003 prices and 2003 quantities. 4. The 2002 index is subtracted from the 2003 index and the difference is divided by the 2002 index. (125-100)/100 = .25 or 25 percent. An easier way, given that the first year is the base year of 100 is simply to compare the two directly. An index of 125 means that prices have gone up by 25 percent since the base year. Using consumer price indexes to compare incomes. 1. If the CPI has increased from 100 over the period of 1982-1984 to approximately 180 now, what has happened to price levels? How much have they changed? 2. If over that same time period, a family’s income has increased from $20,000 to $40,000, what has happened to its real income level? Has it increased? Decreased? 6 3. Use the price indexes and incomes in questions 1 and 2 to calculate the real level of income in terms of 1982-1984 dollars. The following answers should pop-up. 1. Prices have increased by 80 percent. 2. The family’s income increased by 100 percent. Since prices have increased by 80 percent, real income has increased. 3. Real income now equals $22,222. Notes to teachers. 1. Divide 180 by 100. The result is 1.8. Current prices are 1.8 times 1982-84 prices, thus an 80 percent increase. 2. Income is twice what it was. That is an increase of 100%. Since nominal income (that is stated in current dollars) has increased more than prices, real income has increased. 3. To calculate real income in 1982-84 dollars, divide the current nominal income by 1.8 (180/100). The result is ($40,000/1.8) is $22,222. Real income has increased. Key Concepts Inflation Causes Costs Consumer price index (CPI) Unemployment Monetary policy Money Full-employment real GDP Relevant National Economic Standards The relevant national economic standards are numbers 18, 19, and 20. 10. Institutions evolve in market economies to help individuals and groups accomplish their goals. Banks, labor unions, corporations, legal 7 systems, and not-for-profit organizations are examples of important institutions. A different kind of institution, clearly defined and enforced property rights, is essential to a market economy. Students will be able to use this knowledge to describe the roles of various economic institutions. 11. Money makes it easier to trade, borrow, save, invest, and compare the value of goods and services. Students will be able to use this knowledge to explain how their lives would be more difficult in a world with no money, or in a world where money sharply lost its value. 18. A nation's overall levels of income, employment, and prices are determined by the interaction of spending and production decisions made by all households, firms, government agencies, and others in the economy. Students will be able to use this knowledge to interpret media reports about current economic conditions and explain how these conditions can influence decisions made by consumers, producers, and government policy makers. 19. Unemployment imposes costs on individuals and nations. Unexpected inflation imposes costs on many people and benefits some others because it arbitrarily redistributes purchasing power. Inflation can reduce the rate of growth of national living standards because individuals and organizations use resources to protect themselves against the uncertainty of future prices. Students will be able to use this knowledge to make informed decisions by anticipating the consequences of inflation and unemployment. 20. Federal government budgetary policy and the Federal Reserve System's monetary policy influence the overall levels of employment, output, and prices. Students will be able to use this knowledge to anticipate the impact of federal government and Federal Reserve System macroeconomic policy decisions on themselves and others. Sources Of Additional Activities Advanced Placement Economics: Macroeconomics. (National Council on Economic Education) Measuring Economic Performance. Lesson 4. Measuring and Understanding Inflation Focus on Economics: High School Economics (National Council on Economic Education) 8 Lesson 18. Economics Ups and Downs Economics USA: A Resource Guide for Teachers Lesson 9: Inflation: How Did the Spiral Begin? High School Economics Courses: Teaching Strategies Lesson 16: The Trial of Ms. Ann Flation Handbook of Economic Lessons (California Council on Economic Education) Lesson 20. Plotting the Ups and Downs of the U.S. Economy All are available in Virtual Economics, An Interactive Center for Economic Education (National Council on Economic Education) or directly through the National Council on Economic Education. Authors: Stephen Buckles Erin Kiehna Vanderbilt University 9