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Tuning the Models based on Productivity Drivers
Currently this calibration approach is only available for size-based
estimation. Check out the Help file for more discussion on the use of
Productivity Drivers.
Tuning the Models based on your own Historical data
The most accurate means of calibrating or tuning an estimate is to
calibrate by using your organization's own historical project data.
To tailor your initial estimate using historical project data you must first
have entered data on previously completed projects into CaliberRM
ESTIMATE Professional. To enter historical data, select the menu item
Tools | Historical Database Wizard.
The quality of the information you enter in this wizard will directly
determine the quality of the estimate produced by historical calibration.
Be sure that you describe the project type, size, effort, duration, and cost
as accurately as possible.
Once you have historical data, you can tailor your initial estimate by
selecting the menu item Adjustments | Calibration and selecting
Historical Project Data.
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