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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Relative purchasing power parity ： ウィキペディア英語版 Relative purchasing power parity Relative purchasing power parity is an economic theory which predicts a relationship between the inflation rates of two countries over a specified period and the movement in the exchange rate between their two currencies over the same period. It is a dynamic version of the absolute PPP theory.〔(Suranovic, ''International Finance Theory and Policy'' | Problems and Extensions of PPP )〕 ==Explanation== Suppose that the currency of Country A is called the A$ (A-dollar) and the currency of country B is called the B$. The theory states that if the price P in country A of a basket of commodities and services is P A-dollars, then the price Q of the same basket in country B will be C×P A-dollars, where C is a constant which does not vary over time, or, equivalently, C×P×S B-dollars, where S is the (variable) number of B-dollars required to buy one A-dollar, i.e. the exchange rate. If (1) and (2) denote two different dates, then it follows that :$\backslash tfrac\; =\; \backslash tfrac\; =\; \backslash tfrac$ and hence :$\backslash tfrac\; =\; \backslash frac\backslash big)\}\backslash big)\}$ or, in words, the factor representing the movement in market exchange rates is equal to the ratio of the inflation factors (changes in price levels) of the two countries (as one would intuitively expect). Absolute purchasing power parity occurs when C=1, and is a special case of the above. According to this theory, the change in the exchange rate is determined by price level changes in both countries. For example, if prices in the United States rise by 3% and prices in the European Union rise by 1% the purchasing power of the EUR should appreciate by approximately 2% compared to the purchasing power of the USD (equivalently the USD will depreciate by about 2%). Note that it is incorrect to do the calculation by subtracting these percentages – one must use the above formula, giving $\backslash tfrac$ = 0.98058, i.e. a 1.942% depreciation of the USD. With larger price rises, the difference between the incorrect and the correct formula becomes larger.〔purchasing_power_parity〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Relative purchasing power parity」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.