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Definition: A weighting system is a method for quantifying qualitative data to minimize the effect of personal prejudice on source selection. Most such systems involve 1) assigning a numerical weight to each of the evaluation criteria, 2) rating the prospective sellers on each criterion, 3) multiplying the weight by the rating, and 4) totaling the resultant products to compute an overall score.

Acceptance Level:  Generally accepted

Alternative or Related Terms:  Source selection, procurement management, rating system.

Application Areas/Intended Uses: A weighting system is a tool or technique used in source selection—choosing from which potential vendors the organization will procure services for the project.

Chief Advantages: A weighting system helps to ensure a more objective selection of the right vendor to provide a given service.