The man insisted that he ____ nothing wrong and that he _____ free.

A．had done; be set

B．did; was

C．had done; would be

D．did; would be

方差分析的基本思想为（）

A.组间均方大于组内均方

B.误差均方必然小于组间均方

C.组内方差显著大于组间方差时，该因素对所考察指标的影响显著

D.总离均差平方和及其自由度按设计可以分解成几种不同的来源

E.组间方差显著大于组内方差时，该因素对所考察指标的影响显著