You are the project manager for your organization. You are working with your project team to
create activity duration estimates using the PERT method. What is the formula for PERT?

A.
(O+ML+P)

B.
(O+(6M)+P)6

C.
(O+ML+P)/3

D.
(O+(4M)+P)/6

Explanation:
PERT, which means the Program Evaluation and Review Technique, is a duration estimating
technique that uses the formula (O+(4M)+P)/6 for the optimistic, most likely, and pessimistic
values for each work package. A PERT chart is a project management tool used to schedule,
organize, and coordinate tasks within a project. PERT stands for Program Evaluation Review
Technique, a methodology developed by the U.S. Navy in the 1950s to manage the Polaris
submarine missile program. A PERT chart presents a graphic illustration of a project as a network
diagram consisting of numbered nodes (either circles or rectangles) representing events, or
milestones in the project linked by labeled vectors (directional lines) representing tasks in the
project. The direction of the arrows on the lines indicates the sequence of tasks.
Answer option C is incorrect. This is the formula for the three-point estimate.
Answer options A and B are incorrect. These are not the valid formulas.