Chapter 3: Methodology
3.0 Introduction The theory of purchasing power parity is essential for the study of international trade since it argues that there exist a relationship between prices of products and exchange rates. This theory provides a framework for assessing long-term changes in the exchange rates. It states that similar goods and services in various countries should have the same cost in the long-run (Frankel 153). Essentially, the PPP theory is based on the assertion that the exchange rates tend to adjust themselves in such a way that there no opportunity costs for buying particular goods or services in a particular ...