Pareto chart
The 80/20 chart, computed: sorted bars with the cumulative percentage curve on a second axis, the 80% reference line, and the vital-few cut marked where the curve crosses it. Categories are ranked and any tail can be folded into an explicit `Other` bar rather than silently dropped, and a second period can be overlaid to show whether last quarter's vital few are still this quarter's.
In the same space
Most users come to Pareto chart from Minitab Pareto charts, Excel Pareto, JMP or QI Macros. flowss runs this engine in the browser — no install, shareable via URL, exportable to PNG / SVG / PDF / source.
Syntax at a glance
title "Customer complaints"
"Late delivery" 412
"Damaged packaging" 227
"Wrong item" 141Paste this in the Studio code pane to see Pareto chart render live. The full grammar is at the upstream-docs link above.
Sample templates
All 13 →Readmission causes for an 829-admission quarter against the previous one, computing that 5 of 11 causes carry 83.2% of returns and naming medication non-adherence as the cause that entered the vital few while diabetes left it.
A week of cavity-line reject codes typed straight off the check sheet as unquoted labels, computing that 4 of 10 defect modes account for 82.6% of 1,693 rejects and folding the three rarest modes into an explicit Other bar.
Crash groups for the first seven days of an Android release against the release before it, computing that 4 of 11 signatures cause 81.5% of 13,753 crashes and showing an image-cache OOM regression displacing the previous ANR at the top.
Issuer dispute reason codes for a quarter against the previous one, computing that 5 of 11 codes carry 85.1% of 3,648 chargebacks and confirming the vital few are unchanged even though the mix beneath them moved.
Root causes of missed delivery promises across a national parcel network at a 90% cut rather than the usual 80%, computing that 5 of 12 causes still explain 92.7% of 29,486 late parcels with depot missorts alone at 40%.
Stated reasons for first-year withdrawal in an 8,140-strong cohort against the year before, computing that 4 of 10 reasons cover 80.6% of 633 withdrawals and that caring responsibilities entered the vital few as academic difficulty left it.
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