PROJECT SCHEDULING MINI QUIZ

What does the expected time of an activity represent?

• The time it will definitely take to complete the activity.

• The weighted average of optimistic, pessimistic, and most likely time estimates.

• The fastest time an activity can be completed.

• The time with the highest probability of occurrence.

What is the formula to calculate the variance of an activity?

• Variance = (P-O/6)^2

• Variance = (O-P/6)

• Variance = (P+O/6)^2

• Variance = (P-O/6)

In PERT, which formula is used to calculate the expected time for an activity?

• TE = O+P/6

• TE = O+2M+P/6

• TE = O+4M+P/6

• TE = O-4M-P/6

 What does a high variance in an activity indicate?

• The activity will likely finish early.

• There is more uncertainty in the activity's completion time.

• The activity is part of the critical path.

• The activity has zero slack.

What is the total variance of a project determined by?

• Summing the variances of all activities in the project.

•  Summing the variances of the activities along the critical path.

•  Averaging the variances of all activities.

• Multiplying the variances of all activities.

If the expected project duration is 40 days and the variance along the critical path is 4, what is the standard deviation of the project?

• 2 days

• 4 days

• 6 days

• 10 days

What does a critical path consist of?

• The activities with the shortest durations.

• The longest non-overlapping activities.

• The activities that are not dependent on others.

• The sequence of activities with zero slack.

If an activity has an optimistic time of 3 days, most likely time of 6 days, and pessimistic time of 15 days, what is its expected time?

• 6 days

• 7 days

• 8 days

• 9 days

Given the following:

• Optimistic time: 2 days

Pessimistic time: 8 days
What is the activity’s variance?

• 1 day

• 2 days

• 3 days

• 4 days

The expected completion time for a project is 50 days, and the variance along the critical path is 9. What is the probability of completing the project in 56 days?

• 68%

• 84%

• 95%

• 99%