Which of the following statements concerning the residuals (disturbance terms) in linear regression modeling discussed in DS 303 is true? To receive credit, check ALL that apply.
[ ] The sum of the residuals is always 0.
[ ] The sample standard deviation of the residuals is called regression standard error.
[ ] We assume that the residuals have the same variability.
[ ] The value of a residual is the difference between an observed value of the response and the predicted value of the response that one would obtain from the least-squares regression equation.