Unlike Q-Q and probability plots, P-P plots are not invariant to changes in location and scale. See CAPPP2 in the SAS/QC Sample Library For example, the data in the "Getting Started" section are ...

It is bell-shaped and symmetric, and is very common in "real life". Normal Probability Plot: a quantile-quantile plot where one of the data sets is normally distributed. Probability Density Function: ...

(Back to top) Here is an example of a plot for a pair of standardised level 2 residuals from a repeated measures data set: The x-axis refers to intercept residuals and the y-axis to slope residuals.