Wetin be root cause analysis?

Di habit to dey ask why sometin go wrong until di answer no dey shift again, so dat wen you fix di root, di symptoms wey dey on top go comot.

Wen group suppose do root cause analysis instead of one analyst?

Wen di causes spread among di pipo wey dey involved and no single analyst hold all of dem. Structured Democratic Dialogue dey collect causes from evribodi and e dey let evribodi judge di links at 75% bar.

How big root cause analysis group suppose be?

E suppose small reach make pipo fit read one wall and hold one conversation — from twelve reach about two dozen. Dem dey divide bigger rooms into groups and merge dia maps; di bar na di same for evri group.

Root cause analysis template: seven stages wey group fit run for paper

Root cause analysis template

For group of twelve to twenty pipo wey share one problem. E dey run for wall of index cards in one day, or online in few hours of real work, spread as di group like. Each stage get one rule wey dey keep am honest. Na dis template dis site dey run; di numbers na di ones wey we measure say dey work.

0 · Di question

One sentence, about causes, no be solutions. “Wetin dey drive delivery delays across di region?” — no be “how we go fix di delays”. Write am wia evribodi fit see am for di whole session.

1 · Write 45–90 min

Each pesin dey write causes for cards, alone, one cause for each card, bifor e read anybodi else own. Rule: write first, read afta — card wey pesin write afta e read di wall no dey independent. Expect 50–100 cards from fifteen pipo.

2 · Explain 60–120 min

Each pesin dey tok wetin im card mean; oda pipo fit ask wetin e mean. Rule: no judgement — nobodi go tok whether card correct, important or betta pass anoda one. Merge two cards only wen di two pipo wey write dem gree say dem dey tok di same tin.

3 · Bunch 45 min

Group di cards wey share one theme. Rule: bunch dey form wen di pipo wey place di cards gree say dem belong togeda — one pesin opinion no dey enough. Name di bunches last. Di names dey help pipo read di whole wall and vote across themes; dem no dey ever vote on di names or arrange dem — na di cards dem dey vote on.

4 · Pick 15 min

Few stickers each, one for each card, in silence. Take di top of di list — as many as group fit arrange, wey be about fifteen. Rule: keep some places for cards wey no get stickers but wey somebodi fit back with source — cause wey nobodi vote for fit still be di root.

5 · Arrange 2–4 hours; na di heart of am

For each pair of cards for di shortlist, ask: A get big hand for B? Rule: link dey settle only wen three quarters of di pipo wey dey vote gree; pair wey no fit reach dat for any side, dem dey record am as argument, neva as “no”. Skip di pairs wey don already dey implied (if A→B and B→C don settle, A→C don settle too). With fifteen cards dat one na 210 questions bifor skipping; for practice 60–90. Fifteen na dis sheet own number, wey we choose so one session go fit inside one afternoon; di platform dey arrange evri card wey get vote.

6 · Map 30 min

Draw di links. Put card under evri card wey e dey affect. Di cards for di bottom wey notin dey under dem na di root causes. List di pairs wey get argument beside di map.

7 · Actions 60 min

Propose actions. For each action and each root, ask whether di action dey move dat root, at di same 75%. Rule: action wey no move any root no be root-cause action, anytin wey e fix.

Di numbers wey dey behind di rules

Twelve to twenty pipo, becos na dat size room fit read as one wall and argue as one conversation — for simulation, panels of five to fifty dey find about di same share of five known causes, so na wetin one wall and one sitting fit hold dey set di size. Seventy-five percent instead of simple majority, becos simple majority dey certify link wen eight out of fifteen lean dat way, and na from dia wrong links dey come: wen pipo dey get three questions out of ten wrong, simple majority dey put wrong link for di map one time in seven and 75% almost neva. Wen pipo careful, simple majority dey name more causes, 4.8 out of five against 4.1, but map worth to read only if pesin fit trust im links, so dem dey record divide as argument instead of to force am. Five seats wey dem keep, becos room wey dey rank only by wetin e feel no dey find any of di real causes by voting, and e dey find 3.3 out of five with di seats.

For bigger room, divide am into groups and merge di maps — dis site dey do am for any number of groups. Di methods side by side · Example wey we work out