計量跑複迴歸的問題 - 經濟
By Ivy
at 2015-01-03T16:38
at 2015-01-03T16:38
Table of Contents
這次計量的作業,是要用SAS軟體跑複迴歸
由於主題不限,我找了比較生活化的題材
我輸入愛文芒果的價格(Y),氣溫(X1),雨量(X2),日照時數(X3)
一跑,發現調整後R-square才0.12........囧
後來改成觀光收入(Y),歷年來台人數(X1)
其他變數還沒想到,總之先跑跑看
一跑,調整後R-square高達0.98
問了教授,他說一個好的迴歸,應落在0.7-0.8之間
所以太高也不行....
我後來發現,找資料,跑迴歸,分析變數間關係還算容易
反而是一開始如何訂題材最難
所以想問大家有什麼好題材呢? 感激不盡!!
--
由於主題不限,我找了比較生活化的題材
我輸入愛文芒果的價格(Y),氣溫(X1),雨量(X2),日照時數(X3)
一跑,發現調整後R-square才0.12........囧
後來改成觀光收入(Y),歷年來台人數(X1)
其他變數還沒想到,總之先跑跑看
一跑,調整後R-square高達0.98
問了教授,他說一個好的迴歸,應落在0.7-0.8之間
所以太高也不行....
我後來發現,找資料,跑迴歸,分析變數間關係還算容易
反而是一開始如何訂題材最難
所以想問大家有什麼好題材呢? 感激不盡!!
--
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