Creating @Risk Formulas
@Risk formulas are inserted using the Monte Carlo Formula Generator.
The following menu calls will cause this form to appear:
From a Mandrel datafile:
Tools Menu/Monte Carlo '@Risk' Setup/Default, or
Tools Menu/Monte Carlo '@Risk' Setup/Custom
From any spreadsheet containing cost data:
Tools Menu/Monte Carlo '@Risk' Setup/Insert Formulas
If you are using an external spreadsheet with the Monte Carlo Formula Generator, you will need to tell the software what kind of data you have and where it is located on the spreadsheet. The Spreadsheet Usage frame is used for this.
The Spreadsheet Usage frame will not appear if you are working on a Mandrel-generated spreadsheet, because the software will already have this information.
The Current Item frame at the top of the form shows information about the cost item you are currently dealing with and the @Risk Monte Carlo formula, if any, that has been assigned to that cost item.
In order to insert an appropriate Monte Carlo formula for a particular cost item, you must define how you expect that cost to behave. The Expected Behavior frame allows you to select one of two major options:
1. Open-ended (overruns are a possibility)
2. Closed (overruns are not considered possible)
Selecting one of these options will automatically insert an appropriate Monte Carlo formula.
Selecting a Distribution
If you are an experienced user you can select your own formula type via the User-Defined option.