The Weibull module displays panes in three windows, which are always vertically split. For this module, and for the similar ALT module, the Split Windows Vertically command is unavailable because you cannot change the orientation of the System file from a vertical split to a horizontal split.

The LDA Navigator, which appears in the upper left window, is used by both this module and the ALT module. As described in LDA Navigator, you use the LDA Navigator to select an analysis type and manage data sets. Your selection in this window determines the pane that are shown in the other two windows. In these other panes, you enter parameter values and data points, and you view calculation results and plots. The following topics describe the panes for each Weibull analysis type:

In the panes in which you enter parameter values, tool buttons appear on the right side of their title bars to provide quick access to calculations and generated plots. Their availability depends not only on the type of data set selected but also on the parameter values specified. For more information, see Analysis Tool Buttons.