If the residuals have a constant variance, which of the following should be evident?
A) The residuals should have a variance equal to zero for all levels of the independent variable.
B) The plot of the residuals against each x variable should show that the spread in the residuals is about the same at all levels of each of the independent variables.
C) The average residual should be about zero and the residual standard deviation should be approximately 1.
D) None of the above
B
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