问题
选择题
It is not my mother's sweater. _____ sweater is black.[ ]
A．She
B．He
C．His
D．Her
答案
答案：D
搜题请搜索小程序“爱下问搜题”
It is not my mother's sweater. _____ sweater is black.[ ]
A．She
B．He
C．His
D．Her
答案：D
之间的离差平方和最小来估计参数β0和β1的方法是（）。