NO.PZ2018101001000024
问题如下:
Which of the followings is least likely to be the uncertainty in predicting dependent variable?
选项:
A.Regression model itself.
B.Regression model’s parameter.
C.Nonlinear relationships.
解释:
C is correct.
考点: Two Types of Uncertainty in predicting the dependent variable.
解析: 预测因变量的两个不确定性分别是回归模型本身和回归模型的参数,即选项A和B。C选项非线性关系是相关性分析的limitations之一,所以选择C选项。
什么叫不确定的是模型本身和参数呢?老师在哪里讲过这个知识点呢?