To create an analytical frequency function, from the Study Tree right-click on Frequency Functions and select the create new option. Enter the name for the function and a description (optional, but recommended). Select Analytical, and provide the mean, standard deviation, skew, and equivalent record length. Click Save and Close to create the new function.

Create an Analytical Frequency Function Example

To edit the created frequency function, from the Study Tree right-click on the created function and click Edit Frequency Function.