A、可剔除变量个数对拟合优度的影响
B、<sub><IMG src="http://admintk.100xuexi.com/UpLoadImage/2013-05-07/94f2a842-7c91-45d1-8b7a-add3591d3dc1.gif" width="21" height="20"></sub>的值永远小于R<sup>2</sup>
C、同时考虑了样本量与自变量的个数的影响
D、当n接近于k时，<sub><IMG src="http://admintk.100xuexi.com/UpLoadImage/2013-05-07/0d0d0875-96d8-40fc-a15a-74a3e9ce5eff.gif" width="21" height="20"></sub>近似于R<sup>2</sup>