ITPEC FE Morning April 2022 Question 54
ITPEC FE Morning April 2022 — Question 54 of 80
Given three estimates:
- Optimistic (O) = 2 days
- Most likely (M) = 4 days
- Pessimistic (P) = 12 days
Triangular distribution: E = (O + M + P) / 3 = (2 + 4 + 12) / 3 = 6
Why not others:
- (a) 4 — this is just the most likely estimate alone
- (b) 5 — result of the PERT (Beta) formula (O + 4M + P) / 6, not triangular
- (d) 7 — the simple average of optimistic and pessimistic (2 + 12) / 2
Key rule: Triangular = (O + M + P) / 3. PERT (Beta) = (O + 4M + P) / 6. Read the question carefully to know which formula to apply.
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