NO.PZ2019040801000035
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。
系数是线性的是什么意思