Properties of P-P and Q-Q probability plots for visually assessing the fit of probability models are reviewed. It is shown how to construct families of curves for standardized P-P plots, which are ...

You can use a graphical Probability Plot or a statistical test like the Anderson-Darling test and use the p-value to test whether your data is non-normal.

When you request a lognormal probability plot, you must specify the shape parameter for the lognormal distribution (see Table 9.13 for the equation). The value of must be positive, and typical values ...

Marion Gerson, The Techniques and Uses of Probability Plotting, Journal of the Royal Statistical Society. Series D (The Statistician), Vol. 24, No. 4 (Dec., 1975), pp. 235-257 ...