【单选题】下列哪一项是非技术关系中最重要的内容是( )
【简答题】根据()为最小的原则来确定回归系数,称为最小二乘原则。
【判断题】最小二乘原理是指使 达到最小值的原则确定样本回归方程
【单选题】What if one is “accustomed to the more attractive elements” of one’s partner’s personalities?
A.
Then one would appreciate one’s partner more.
B.
Then one would become a friend of one’s partner.
C.
Then one would be blind to the good qualities of one’s partner.
D.
Then one would find one’s partner more attractive.
【简答题】算术平均值原理、最小二乘原理、最小中误差原理?三者存在着什么关系?
【单选题】Foods rich in Vitamin A are said to be good for______.