摘要: |
选取2005年7月21日至2010年5月14日间每个交易日的美元/人民币汇率中间价的高频数据作为样本数据,然后对样本数据进行平稳处理和ARCH效应检验,在满足GARCH建模条件下建立EGARCH(1,1)模型,实例检验和分析人民币汇率波动性。结果表明,2005年7月21日以来,人民币汇率收益率序列具有明显的尖峰厚尾特征;汇率的波动具有聚集性;人民币的汇率波动存在一定的杠杆效应,但不是很大,人民币汇率还不具备浮动汇率的特征。 |
关键词: 汇率 波动 人民币 EGARCH模型 |
DOI: |
投稿时间:2009-06-12修订日期:2010-09-15 |
基金项目:华南农业大学校长基金(项目号:4900-K07284)资助 |
|
RMB Exchange Rate Volatility Based on EGARCH Model |
ZHU Yan-ke
|
(Department of Mathematics of Science South China Agricultural University, Guangzhou, Guangdong, 510640, China) |
Abstract: |
The RMB exchange rate volatility is empirically analyzed and tested based on the data from July 21, 2005 to May 14, 2010.The results shows Leptokurtosis and clustering in return series of RMB since July 21, 2005.The EGARCH results show that to some extent there is leverage effect to exchange rate, so RMB does not have the characteristics of the floating exchange rate. |
Key words: exchange rate volatility RMB EGARCH model |