In a Multiple Regression Model, If the Residuals Have a Constant

Multiple Choice

In a multiple regression model, if the residuals have a constant variance, which of the following should be evident?

A) The residual mean should be close to zero and the residual standard deviation should be close to 1.0.
B) The plot of residuals against each independent variable should show that the spread in the residuals is about the same at all levels of the independent variables.
C) The residuals should have a variance equal to zero for all levels of the independent variable.
D) All of these.
E) None of these.