Actually, probplot : Probability plot Same as a Q-Q plot, however probabilities are shown in the scale of the theoretical distribution (x-axis) and the y-axis contains unscaled quantiles of the sample data.
So, difference between QQ plot and Probability plot, in these modules, is related to the scales.
Written by Joe Godot
Statistics, machine learning and quantitative finance connoisseur, programming lover, and humanities aficionado.