Guesstimates
Fleet service callouts in Chennai
Estimate callouts per quarter and explain the boundary, assumptions and range.
Start with 24 fleet depots and 100 vehicles per depot. Estimate callouts per 100 vehicles before revealing the model.
Reveal the worked estimate
Multiply the two base factors by the rate divided by 100. All figures below are simulated teaching assumptions.
- Low · 24 × 100 × 7 ÷ 100 ≈ 168 callouts per quarter
- Base · 24 × 100 × 12 ÷ 100 ≈ 288 callouts per quarter
- High · 24 × 100 × 18 ÷ 100 ≈ 432 callouts per quarter
Cross-check · Check workshop invoices and reconcile duplicate job cards to unique failures.