攻克Alevel经济学问答题：通货膨胀

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两分钟了解通货膨胀衡量指标，更有Alevel真题、答案一眼看穿！

Inflation is a persistent increase in the average price level in the economy.

1) There may be errors in the collection of data that limit the accuracy of the results. e.g. only the prices of selected outlets will be used.

2) There are changes in consumption patterns over time, which cannot always be taken into account.

3) The quality and types of goods and services change over time. e.g. the price of a newer model of computer will be higher & feed into a higher rate of inflation.

4) Changes in producer prices and commodity prices are excluded in the calculation of CPI. (Producer price index measures changes in the prices of factors of production and is useful in predicting future inflation.)

5) Some one-off events such as seasonal variations & oil price shocks will lead to unusual movements in the inflation rate and can be misleading. (A core rate of inflation that excludes food & energy prices should be considered.)

6) It is hard to make international comparisons because countries measure their inflation in different ways & include different components.

相关A-level 真题：

1. (November, 2010v1)

(b) Discuss the methods and problems involved in constructing an accurate measure of the rate of inflation.                                                               [12]

产生通货膨胀的原因是什么？

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