| 研究生: |
張欣惠 |
|---|---|
| 論文名稱: |
兩群時間序列Granger領先關係之新檢定方法 New Tests of Granger Causality for two Groups of Time Series |
| 指導教授: | 洪英超 |
| 學位類別: |
碩士
Master |
| 系所名稱: |
商學院 - 統計學系 Department of Statistics |
| 論文出版年: | 2014 |
| 畢業學年度: | 102 |
| 語文別: | 中文 |
| 論文頁數: | 37 |
| 中文關鍵詞: | 向量自我回歸模型 、Granger 領先關係 、Wald test 、檢定力 |
| 相關次數: | 點閱:100 下載:13 |
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驗證兩群時間序列間之領先關係不但在經濟的領域上為重要的課題之一,在其他領域也被廣泛地應用。由於傳統檢定此多變量常態分配之平均向量的Uniformly most powerful(UMP) test 通常不存在,因此在本文中介紹一些新檢定統計量,用於檢定多變量Granger 領先關係檢定,判斷兩群時間序列間是否存在領先關係,並於定態(stationary) vector autoregression (VAR) 模型為背景下進行。這些新檢定統計量之接受域臨界值可以從多變量常態分配中計算或估計出,因此不論在操作或執行上皆相當容易,除此之外,在一些參數限制下,這些新檢定統計量皆有各自的使用時機,使得與傳統Wald test相比有較好之檢定力。最後,藉由美國兩組經濟指標資料進行實證分析,評估本研究建議之新檢定統計量。
第一章 導論 1
第二章 Granger Non-causality 檢定 3
第一節 向量自我回歸模型 3
第二節 模型選擇與定態檢定 4
第三節 多變量領先關係檢定 6
2.3.1 多變量領先關係 6
2.3.2 Wald檢定統計量 8
2.3.3 Wald檢定統計量之檢定力 9
第四節 新檢定統計量 10
2.4.1 檢定統計量M 10
2.4.2 檢定統計量 M_s 11
2.4.3 檢定統計量 B 12
2.4.4 檢定統計量 B_s 13
第三章 實際資料分析與模擬 14
第一節 實例分析 14
3.1.1 定態檢定與模型選擇 14
3.1.2 領先關係檢定 15
第二節 檢定統計量之拒絕域(接受域)與檢定力 16
3.2.2 統計量M之接受域 17
3.2.3 統計量 M_s 之接受域 17
3.2.4 統計量B 之接受域 18
3.2.5 統計量 B_s 之接受域 18
3.2.6 檢定統計量之接受域比較 19
第三節 檢定力 20
第四節 小樣本之接受域與檢定力 24
3.4.1 領先關係檢定 24
3.4.2 小樣本接受域與檢定力 25
第五節 模擬研究 29
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