Question 1

A project has the following three-point estimates for a critical activity:

Optimistic (O): 8 days
Most Likely (M): 12 days
Pessimistic (P): 22 days

Using the PERT formula, what is the expected duration for this activity? (Round to one decimal place, enter numbers only)

Accepted Answer

Use the PERT formula: Expected Duration = (O + 4M + P) / 6. Calculate: (8 + 4(12) + 22) / 6 = (8 + 48 + 22) / 6 = 78 / 6 = 13.0 days.

Question 2

What mistakes do candidates make on this PMP question?

Accepted Answer

Using simple average instead of PERT formula, calculation errors, or incorrect formula application.

A project has the following three-point estimates for a critical activity:<br/><br/>Optimistic (O): 8 days<br/>Most Likely (M): 12 days<br/>Pessimistic (P): 22 days<br/><br/>Using the PERT formula, what is the expected duration for this activity? (Round to one decimal place, enter numbers only)

How to approach this question

Full Answer

Common mistakes

Practice the full PMI PMP Practice Exam 2

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