Not-so-model behavior: Popular software tools may give faulty forecasts

Some of the models used to forecast everything from financial trends to animal populations in an ecosystem are incorrect, ...
Simon Fraser University

Example 10.2: Estimating Parameters from Lognormal Plots

Note: You must specify a value for the shape parameter for a lognormal Q-Q plot with the SIGMA= option or its alias, the SHAPE= option. The plot in Output 10.2.2 displays the most linear point pattern ...
Simon Fraser University

Example 4.6: Fitting a Three-Parameter Lognormal Curve

If you request a lognormal fit with the LOGNORMAL option, a two-parameter lognormal distribution is assumed. This means that the shape parameter and the scale parameter are unknown (unless specified) ...