One of the requirements for conducting inference on the least-squares regression model is that the
A) mean of the response variable changes at a constant rate while the standard deviation remains constant.
B) mean of the explanatory variable changes at a constant rate while the standard deviation remains
C) mean of the response variable remains constant while the standard deviation changes at a constant rate.
D) mean of the explanatory variable remains constant while the standard deviation changes at a constant

Question

Quizplus · Accepted Answer

The requirement for conducting inference on the least-squares regression model is that the mean of the response variable changes at a constant rate for different values of the explanatory variable, while the standard deviation of the residuals remains constant across all levels of the explanatory variable. This is a description of the linearity and homoscedasticity assumptions in regression analysis.

One of the Requirements for Conducting Inference on the Least-Squares