Decision Matrix
A Decision Matrix is a table that compares several options against a shared set of criteria: each option is scored on each criterion, the criteria are weighted by importance, and the weighted scores are added up to give a ranking the group can discuss. The engineering designer Stuart Pugh described an unweighted form in 1981, in which each option is rated better, same or worse than a reference option; the weighted scoring table most teams use today is general management practice. Its main value in a workshop is that it forces a group to say out loud what matters before arguing about which option wins.
Facilitation script
- 1
Frame the decision: write the question above the grid, confirm the options and remove any that nobody seriously backs.
5 min - 2
Collect criteria silently on sticky notes, cluster them and agree four to seven columns. Reword each so that a high score is good.
10 min - 3
Set the weights. Ask each person for their weighting, discuss the largest gaps and settle one weight per criterion before any option is scored.
7 min - 4
Score column by column. Everyone notes a score for each option individually, then reveal and talk through the cells where scores differ by two points or more.
15 min - 5
Calculate weighted totals and show the ranking.
3 min - 6
Sanity check: ask what surprised people, change one contested weight to see whether the ranking holds, and name anything the criteria failed to capture.
7 min - 7
Confirm the decision or the next step, and record criteria, weights and open questions.
3 min
Tips
Fix the weights before scoring starts, otherwise people adjust them until their preferred option wins.
If one criterion is a hard requirement, treat it as a pass or fail filter and remove failing options instead of giving it a very high weight.
When the totals surprise the room, treat that as information: either a criterion is missing or the group's intuition rests on something nobody has named yet.
Common pitfalls
Setting or changing weights after the scores are visible, which lets the group reverse-engineer the result it already wanted and removes the point of the exercise
Using criteria that overlap, such as cost and budget fit, so one concern is counted twice and tilts the totals
Mixing scale directions, for example scoring price high when it is expensive, which silently rewards the worst option on that criterion
Treating a difference of a few points as a clear winner when the scores themselves are rough estimates; close totals mean the options are effectively tied on these criteria
Letting the most senior person call out scores first, so the grid records one opinion with extra arithmetic
Variations
Pugh matrix: pick one option as the reference, usually the current solution, and rate every other option per criterion as better (+), same (0) or worse (-) without weights; this is quick and works well for early concept screening. Unweighted matrix: skip the weights when all criteria matter about equally. Remote: use a shared spreadsheet, let everyone enter scores in their own hidden tab or column and average them. For larger groups, split into subgroups that each score one criterion and report back.
Where it fits
When to use it
A group has three to seven comparable options and the discussion keeps circling because people are judging them on different grounds
A choice between vendors, tools or concepts has to be justified later to people who were not in the room
Stakeholders disagree and you suspect the disagreement is about what matters, not about the options themselves
A shortlist from an ideation or research phase needs to be narrowed to one or two candidates for deeper work
When not to use it
There are dozens of ideas to sort quickly; use dot voting or an impact-effort matrix first and bring only the shortlist into a matrix
The options are not comparable, for example a strategy question mixed with a tooling question; separate the decisions before scoring anything
Nobody has enough information to score honestly; run the research or a small test first, because guessed scores give a false sense of precision
You are ranking backlog items by value and effort; ICE or RICE scoring is built for that and is faster
The decision has already been made and the matrix would only decorate it; say so and spend the time on implementation planning instead
Related methods
Further reading
Frequently asked questions
What is Decision Matrix?▾
A Decision Matrix is a table that lists options as rows and decision criteria as columns. The group scores each option on each criterion, multiplies the scores by weights that reflect how important each criterion is, and adds them up. The totals give a ranking that the group then checks against its own judgement.
What is the difference between a Pugh matrix and a weighted decision matrix?▾
In a Pugh matrix one option serves as the reference and every other option is rated better, same or worse than it on each criterion, with no weights. A weighted decision matrix scores each option on a numeric scale and multiplies by criterion weights. The Pugh form is quicker and suits early screening; the weighted form gives a finer ranking for a final choice.
How many criteria should a decision matrix have?▾
Four to seven is workable for most group decisions. Fewer than four usually means something important is missing, and more than seven dilutes the weights so much that no single criterion influences the result. Merge overlapping criteria before scoring.
Should the highest score always win?▾
No. The total is an input to the conversation and not a verdict. If the top-scoring option feels wrong to the group, look for a missing criterion or a weight that does not reflect real priorities, adjust openly and recalculate once.
How do you set the weights in a group?▾
Ask each person to propose weights individually, then compare and discuss the biggest differences. A simple approach is a 1 to 5 scale per criterion; another is to distribute 100 points across all criteria, which forces trade-offs. Agree the weights before any option is scored.
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Try it freeMethod descriptions on Workshop Weaver are original content written by our team, based on established facilitation practices. This method was inspired by work from Stuart Pugh (Pugh matrix, 1981); weighted scoring is general management practice.