ECON 2305 Lecture Notes - Lecture 10: Fisher Hypothesis, Neutrality Of Money, Seigniorage
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This increase in the overall level of prices is called inflation; which drives up prices. Economists measure the inflation rate as the percentage change in the consumer price index (cpi), the gdp deflator, or some other index of the overall price level. A rise in the price level means a lower value of money because each dollar in your wallet now buys a smaller quantity of goods and services. P is the price level as measured, by cpi or gdp deflator. Then p measures the number of dollars needed to buy a basket of goods and services. Now turn this idea around: the quantity of goods and services that can be bought with equals 1/p. In other words, if p is the price of goods and services measured in terms of money, 1/p is the value of money measured in terms of goods and services. We can use price index for thousands of.