Sensitivity Analysis Page

Windchill Risk and Reliability Desktop Help > Windchill LCC > LCC Calculations > LCC Calculation Properties > Sensitivity Analysis Page

When you select LCC > Sensitivity Analysis in the Calculate window, you can indicate whether you want to perform sensitivity analysis on the alternatives in the Project’s LCC Variables file. Sensitivity analysis allows you to see which variables have the most impact on system cost. By varying different cost items over a range of fluctuations, you can determine which variables have the most significant influence on total cost. Ensuring highly sensitive variables remain stable enables you to more easily keep costs in check.

The following table describes the properties on the Sensitivity Analysis page. Results for sensitivity analysis of the selected variable are available on LCC reports.

Property	Description
Calculate sensitivity analysis	Indicates whether to perform sensitivity analysis. When this checkbox is cleared (default), all other properties on this page are unavailable and ignored during LCC calculations. When this checkbox is selected, other properties are made available on this page. The sensitivity analysis equations are run once without modifying the variable. They are then run once again for each value of the varying variable.
Variable	The variable on which to perform the sensitivity analysis. All variables in the Project’s LCC Variables file are available for selection.
Data Field	The data field on which to perform sensitivity analysis. All data fields used in LCC equations are available for selection.
From %	The minimum percentage value by which the selected variable can be modified. The default is 90. An integer greater than 0 must be selected.
To %	The maximum percentage value by which the selected variable can be modified. The default is 100. However, the maximum percentage can be greater than 100. The integer selected here must be greater than that selected for From %.
Increment	An integer value greater than 0 that represents the step size to take to get from the value entered for From % to the value entered for To %. The default is 2. For example, if 90 is entered in From % and 100 is entered in To %, an integer value of 2 calculates the variable at 90, 92, 94, 96, 98, and 100.