Decision matrix (weighted / Pugh)
Weighted decision matrices and Pugh concept selection, with the arithmetic done for you. Weights are normalised and checked (two levels with groups) and scores can use any scale. Measured criteria such as cost or latency are rescaled onto that scale, and must-have knock-outs exclude an option whatever its total. You get totals, a ranking and a highlighted winner, plus the question a steering committee actually asks: how far would one weight have to move before the answer changed? It is answered for every challenger, alongside dominated options and criteria that separate nothing. Write +/S/− against a datum and the same notation becomes a Pugh matrix with Σ+, ΣS, Σ− and a weighted net.
In the same space
Most users come to Decision matrix (weighted / Pugh) from Excel weighted-scoring sheets, Pugh matrix spreadsheets, Tender evaluation workbooks or Miro decision matrix templates. flowss runs this engine in the browser — no install, shareable via URL, exportable to PNG / SVG / PDF / source.
Syntax at a glance
options "Option A" | "Option B" | "Option C"
"Cost" weight 40 : 4 3 5
"Quality" weight 35 : 3 5 4
"Risk" weight 25 : 4 4 2Paste this in the Studio code pane to see Decision matrix (weighted / Pugh) render live. The full grammar is at the upstream-docs link above.
Sample templates
All 12 →Four ERP routes scored by a selection panel in three weighted groups — capability, delivery and commercial — with time to go-live and five-year cost measured rather than scored. The £2.4m TCO cap knocks out the tier-1 suite despite its 3.47; the cloud mid-market option ranks first at 3.80 of 5, 0.38 ahead of the industry specialist, and keeps the lead unless production planning's weight rises from 15.8% to 29.2%. Illustrative values.
Four distribution-centre sites compared on modelled drive time, lease cost, labour pool and grid capacity, plus scored flood, expansion and planning risk on a 1–10 scale. Site C's 3.2 MVA supply fails the 4 MVA must-have; Site A ranks first at 7.22 of 10, 0.67 ahead of Site D, and stays ahead unless the weight on lease cost rises from 20% to 25.6%. Illustrative values.
A weighted Pugh matrix screening four battery-mount concepts against the current down-tube rail, with one measured row — pack plus mount mass — compared with the datum's own value. The under-seat cassette leads with a weighted net of +0.40, better on four criteria and worse on one, and holds unless the weight on weight distribution more than doubles from 15% to 32%. Illustrative values.
A classic unweighted Pugh matrix from a Six Sigma Improve phase: four ideas for cutting ward discharge delays judged +/S/− against today's process. The 09:00 daily board round nets +4 — better on four criteria and worse on none — ahead of preparing medicines to take home the evening before at +2, while criteria-led discharge and a discharge lounge both net −1. Illustrative values.
An anonymised structured-interview scorecard for a senior data engineer: seven competencies in two groups scored on a 1–5 rubric, with the coding exercise and data-quality testing as must-haves. Candidate D's 2 on the coding exercise ends their process; Candidate C ranks first at 3.95, only 0.10 ahead of Candidate B — a fragile lead that flips if system design's weight rises from 20% to 23.8%. Illustrative values.
A most-economically-advantageous-tender evaluation for volumetric infusion pumps in four weighted groups (safety 35%, usability 25%, interoperability 20%, price 20%), scored 0–10 with programming steps and five-year cost measured. Bidder Y has the highest total at 7.62 but fails the dose-error-reduction must-have, so Bidder X ranks first at 7.09 of 10, 0.19 ahead of Bidder Z. Illustrative values.
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