问题如下:
In linear regression, the equation must be linear in:
选项:
A. neither the variables nor the coefficients.
B. the coefficients but not necessarily the variables.
C. the variables but not necessarily the coefficients.
D. both the variables and the coefficients.
解释:
B is correct
考点:线性回归基本概念
解析:线性回归关系主要是针对参数和系数的,至于变量是不是线性的无所谓。
老师可以举一个系数是非线性的例子吗