Worked example · TW-2026-11-11.1

Insufficient evidence

Insufficient evidence · Fictional case · Proposed interpretation

Stages reviewed 7 of 7

Executive summary

The answers do not establish a cause. Gather more evidence before choosing an intervention.

Reported evidence and route

Performance gap — Fictional dispatch team at Meridian Works. Expected: At least 98 of every 100 orders pass the first quality check. Observed: In the last sample, 91 of 100 orders passed the first check. Evidence: The fictional dispatch log records nine rework orders in a sample of 100.

Impact — Significant impact

Expectations — The standard is clear

Working conditions — Tools, time and support are adequate

Consequences — Rewards support the intended behaviour

Skill and knowledge — Competence still needs checking

Remaining obstacles — Further investigation is needed

Manager’s observation or concern — No observed demonstration is available.

What remains uncertain

Observe the task before drawing a conclusion about competence.

Further investigation is needed before confirming the remaining factors.

Suggested management actions

Review the evidence with the team and observe the task before selecting a remedy.

Manager’s decision

Example choice: verify the possible cause with the team before committing resources.

Conclusion

Insufficient evidence. Review the proposed findings with the people who do the work.