The fitted quantiles in the Diagnostic Plot and the fitted quantiles saved with the Save Fitted Quantiles command are formed using the following method:
2.
Compute the p[i] = rank[i]/(n+1).
3.
Compute the quantile[i] = Quantiled(p[i]) where Quantiled is the quantile function for the specific fitted distribution, and i = 1,2,...,n.

Help created on 9/19/2017