Busy routes may correlate with deviations without causing them.
Avoid a quick conclusion
Stops, waiting, fill and staffing may change together.
Inspection sequence
Map candidate factors. Change one practical input per comparison, measure selected indicators and test counterexamples.
Decision data
- Observed relationship
- Candidate factor
- Changed input
- Comparison result
A controlled comparison can strengthen a hypothesis. Do not invest in routes or equipment based on co-occurrence alone.
