作者qmorewhy (戒ptt中..)
看板Statistics
标题[问题] 一个统计选择题(急)
时间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
解答写C
请问为什麽不是B呢?
R^2越大F也越大不是吗
谢谢
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1F：推 kim:判定系数愈大有可能是源自於太多不必要的自变数 03/15 21:27
2F：→ kim:而每系数的标准误 才是以T分配去做该系数显着性检定的关键 03/15 21:28
3F：推 qmorewhy:感谢! 03/16 08:40