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13 January 2011

What is the Weighted Scoring Method?

David A. Zimmer
David A. Zimmer, PMP
Chief Project Professor
American Eagle Group

Practical Definition
A method of scoring options or solutions against a prioritize requirements list to determine which option best fits the selection criteria.

Note: This is the first in a two part series of articles describing the Weighted Scoring Model, a.k.a., Weighted Scoring Method - a technique under the category of Multi-Criteria Decision Analysis. The second article of the series describes some of the shortcomings or "holes" of this method.

The Weighted Scoring Method
Weighted Scoring is a technique for putting a semblance of objectivity into a subjective process. Using a consistent list of criteria, weighted according to the importance or priority of the criteria to the organization, a comparison of similar “solutions” can be completed. If numerical values are assigned to the criteria priorities and the ability of the product to meet a specific criterion, a “weighted” value can be derived. By summing the weighted values, the product most closely meeting the criteria can be determined.