There are many reasons why the point pattern in a Q-Q plot may not be linear. Chambers and others (1983) and Fowlkes (1987) discuss the interpretations of commonly encountered departures from ...

Example 55.8: Creating PP and QQ Plots The following program creates probability-probability plots and quantile-quantile plots of the residuals (Output 55.8.1 and Output 55.8.2, respectively). An ...