A project's completion time variance is calculated by?
A) Summing the variances of the critical path activities
B) Multiplying the variances of the critical path activities
C) Multiplying the variances of all of the project activities
D) Summing the variances of all of the project activities

Question

Quizplus · Accepted Answer

The completion time variance of a project is calculated by summing the variances of the critical path activities. This is because the critical path activities have the most impact on the overall project completion time, and their variances determine the amount of deviation from the expected completion time. By summing these variances, the project manager can determine the overall variance in completion time and identify any areas where additional attention may be needed to stay on schedule. Multiplying the variances of the critical path activities (B) or all of the project activities (C) would not accurately capture the impact of each individual activity on the overall completion time variance. Summing the variances of all project activities (D) would overemphasize the importance of non-critical activities and potentially obscure issues on the critical path.

A Project's Completion Time Variance Is Calculated By