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台日匯率、相對物價之因果與時差分析—向量自我迴歸模型之應用

The Causality and Time Lag between Exchange Rates and Relative Price of Taiwan and Japan-The Vector Auto-regression Model

摘要


由於台灣屬於海島型經濟,對外貿易依存度很高。因為日本地理位置鄰近台灣且台日文化同屬東方文化,以致貿易頻繁。許多學者曾針對影響台日貿易的重要因素詳加探討,根據國貿理論顯示,匯率係影響貿易的重要因素之一。再根據購買力平價理論,兩國相對物價決定匯率的重要因素。因此,匯率與相對物價之因果關係及時差為何?係本研究主要探討的主題。本研究採用了單根檢定、向量自我迴歸和Granger因果檢定分析台日匯率和相對物價之因果關係及時差,實證期間為台灣匯率自由化後之1991年1月至2011年12月之月資料。

並列摘要


Taiwan is the type of island economy that highly depends on international trade. Taiwan geographically closes to Japan and they are belonging to the same Asian culture so that trade frequently. According to the international trade theory, the exchange rate is an important factor influencing trade. According to Purchasing Power Parity theory, the relative price of the two countries is an important factor in determining the exchange rate. Therefore, what's the causality and time lag between exchange rate and relative price of Taiwan and Japan? The study tries to investigate this theme.This study adopts unit root test, Vector Auto-regression model and Granger causality test to analysis the exchange rate and relative price of Taiwan and Japan. The research period is from January, 1991 till December, 2011.

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