Decision Matrix (MCDA)

Weighted scoring for prioritization involves assigning percentage weights to criteria and scoring options on a scale like 1-10. The multicriteria decision analysis computes an overall score for each alternative, ranking them to identify the optimal choice.

MCDA for vendor selection is a structured method to evaluate options by scoring them across defined criteria with assigned weights. It calculates an overall evaluation value for each vendor, providing a quantitative comparison to balance multiple factors.

Calculate an overall score by multiplying each option's score per criterion by the criterion's weight, then summing the results. This MCDA approach requires weights to total 100% and uses a defined scoring scale to rank alternatives objectively.

You cannot use this MCDA workflow if criteria weights do not sum to 100%. The calculation requires defined options, a scoring scale, and weights that total exactly 100% to compute accurate overall evaluation values for ranking alternatives.

The best way to decide when impact and effort conflict is to apply a weighted MCDA scoring model. By assigning explicit weights to impact, effort, and risk criteria, you compute an overall evaluation value to objectively rank alternatives and identify the optimal choice.

You should not use a weighted decision matrix when you lack clearly defined options, measurable criteria, or a consistent scoring scale. Without criteria weights that sum to 100%, the MCDA process cannot compute a valid overall evaluation value to rank alternatives.