Principles of Economics- Mankiw (5th) 504

Principles of Economics- Mankiw (5th) 504 - ers for the...

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520 PART EIGHT THE DATA OF MACROECONOMICS QUICK QUIZ: Explain briefly what the consumer price index is trying to measure and how it is constructed. CORRECTING ECONOMIC VARIABLES FOR THE EFFECTS OF INFLATION The purpose of measuring the overall level of prices in the economy is to permit comparison between dollar figures from different points in time. Now that we know how price indexes are calculated, let’s see how we might use such an index to compare a dollar figure from the past to a dollar figure in the present. DOLLAR FIGURES FROM DIFFERENT TIMES We first return to the issue of Babe Ruth’s salary. Was his salary of $80,000 in 1931 high or low compared to the salaries of today’s players? To answer this question, we need to know the level of prices in 1931 and the level of prices today. Part of the increase in baseball salaries just compensates play-
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Unformatted text preview: ers for the higher level of prices today. To compare Ruths salary to those of todays players, we need to inflate Ruths salary to turn 1931 dollars into todays dollars. A price index determines the size of this inflation correction. 1965 Percent per Year 15 CPI GDP deflator 10 5 1970 1975 1980 1985 1990 1998 1995 Figure 23-2 T WO M EASURES OF I NFLATION . This figure shows the inflation ratethe percentage change in the level of pricesas measured by the GDP deflator and the consumer price index using annual data since 1965. Notice that the two measures of inflation generally move together. S OURCE: U.S. Department of Labor; U.S. Department of Commerce. The price may seem a little high, but you have to remember thats in todays dollars....
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This note was uploaded on 07/30/2010 for the course ECON 120 taught by Professor Abijian during the Spring '10 term at Mesa CC.

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