攻克Alevel經濟學問答題：通貨膨脹
一篇文章? ? ? ? 2mins
兩分鐘了解通貨膨脹衡量指標，更有Alevel真題、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.
相關A-level 真題：
1. (November, 2010v1)
(b) Discuss the methods and problems involved in constructing an accurate measure of the rate of inflation.? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?[12]
1) 答題思路：先寫measure the rate of inflation 的方法，再寫constructing the method 時遇到的問題。
2）得分點：
Understanding of the means of measurement of inflation? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 4 marks
Discussion of the method of construction
4 marks
Discussion of problems of stages and final outcome
4 marks
3) 真題答案：
產生通貨膨脹的原因是什么？
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