It is appropriate to examine the residuals from the fitted model for analysis of variance just as you did with the multiple regression model you fit in Chapter 14, "Multiple Regression." The residuals ...

A residual-by-predicted plot is commonly used to diagnose nonlinearity or nonconstant error variance. It is also used to find outliers. A residual-by-predicted plot ...

Some outliers influence the regression fit more than others. Figure 1: Observations near the mean have less influence on the regression estimates and fitted values. Note that this adjustment also ...