作者qmorewhy (戒ptt中..)
看板Statistics
標題[問題] 一個統計選擇題(急)
時間Thu Mar 15 14:12:04 2007
The most important measure of how well an estimated regression line
fits the sample data on which it is based is
A)the population coefficient of correlation
B)the population coefficient of determination
C)the sample standard error of estimate
D)none of the above
解答寫C
請問為什麼不是B呢?
R^2越大F也越大不是嗎
謝謝
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1F：推 kim:判定係數愈大有可能是源自於太多不必要的自變數 03/15 21:27
2F：→ kim:而每係數的標準誤 才是以T分配去做該係數顯著性檢定的關鍵 03/15 21:28
3F：推 qmorewhy:感謝! 03/16 08:40