Economics A100 Lecture Notes - Lecture 16: Starbucks, Producer Price Index, Capital Good

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Measures the cost of a basket of goods and services bought by firms rather than consumers (often thought to be useful in predicting changes in the consumer price index) Substitution bias: some prices rise more than others; consumers respond by buying less of the goods whose prices are rising and more of the goods whose prices are rising less or perhaps even falling. If a price index is computed assuming a fixed basket of goods, it ignores the possibility of consumer substitution and therefore overstates the increase in the cost of living from one year to the next. Introduction of new goods: when a new good is introduced, consumers have more variety from which to choose, and this in turn reduces the cost of maintaining the same level of economic well-being. Like the cpi, the gdp deflator measures the overall level of prices in the economy. The 2 price indexes usually move together, but there are important differences.

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