回归系数的假设检验()
A.可用r检验代替
B.可用t检验
C.可用F检验
D.当n<50时,可查r界值表
E.以上均可
参考答案:E
五灵脂治疗血瘀诸痛,常与下列何药配伍()。
A.益母草
B.红花
C.桃仁
D.蒲黄
E.桑寄生
According to the speaker, it is foolish and childish for a filmmaker to mix his preconceptions with objective truth when he produces a documentary.
A.True
B.False