Residual analysis is conducted to check whether regression assumptions are met. Which of the following is not an assumption made in simple linear regression?
A) Errors are independent of each other.
B) Errors are normally distributed.
C) Errors are linearly related to x.
D) Errors have constant variance.

Question

Quizplus · Accepted Answer

The assumption in simple linear regression is that the relationship between the independent variable (x) and the dependent variable is linear, not that the errors themselves are linearly related to x. Errors are expected to be independent, normally distributed, and have constant variance.

Residual Analysis Is Conducted to Check Whether Regression Assumptions Are