Activity Network Diagram
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Questions and Answers

What is the main objective of PERT analysis in project management?

  • To calculate the critical path of a project
  • To evaluate the three time estimates of an activity (correct)
  • To determine the earliest start time of a project
  • To identify the dependencies between project activities
  • Which of the following is a characteristic of the Critical Path Method (CPM)?

  • It assumes that activity times are independent
  • It is used for projects with limited resources
  • It focuses on the critical activities in a project (correct)
  • It considers both optimistic and pessimistic time estimates
  • What is the formula to calculate the expected time estimate of an activity in PERT analysis?

  • te = to + tp
  • te = (to + tm + tp) / 2
  • te = (to + 4tm + tp) / 3 (correct)
  • te = (to + tp) / 2
  • Which activity has the highest expected time estimate in the given project?

    <p>Activity F</p> Signup and view all the answers

    What is the purpose of creating a network diagram in project management?

    <p>To determine the dependencies between project activities</p> Signup and view all the answers

    Which of the following is a limitation of the CPM method?

    <p>It does not consider the uncertainty of activity times</p> Signup and view all the answers

    What is the difference between the PERT and CPM methods?

    <p>PERT considers uncertainty, while CPM does not</p> Signup and view all the answers

    Which activity has the lowest expected time estimate in the given project?

    <p>Activity I</p> Signup and view all the answers

    What is the purpose of estimating activity times in project management?

    <p>To determine the project schedule</p> Signup and view all the answers

    Which of the following is a benefit of using the PERT method?

    <p>All of the above</p> Signup and view all the answers

    Study Notes

    Time Estimates

    • Three time estimates are used to calculate the time estimate (te) for each activity: optimistic time estimate (to), most likely time estimate (tm), and pessimistic time estimate (tp).

    Formula for Time Estimate (te)

    • te = to + 4tm + tp

    Calculated Time Estimates

    • Activity A: te = 2 + 4(5) + 8 = 24 -> te = 6
    • Activity B: te = 2 + 4(3) + 4 = 30 -> te = 5
    • Activity C: te = 6 + 4(8) + 10 = 72 -> te = 12
    • Activity D: te = 2 + 4(4) + 6 = 30 -> te = 5
    • Activity E: te = 2 + 4(6) + 10 = 66 -> te = 11
    • Activity F: te = 6 + 4(7) + 8 = 54 -> te = 9
    • Activity G: te = 6 + 4(8) + 10 = 90 -> te = 15

    Network Diagram

    • The network diagram for the project is constructed using the calculated time estimates.

    Time Estimates for Each Activity

    • Activity A: te = 4
    • Activity B: te = 6
    • Activity C: te = 10
    • Activity D: te = 12
    • Activity E: te = 9
    • Activity F: te = 21
    • Activity G: te = 22
    • Activity H: te = 5
    • Activity I: te = 3

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    Description

    This quiz is about creating an activity network diagram, a tool used in project management to organize and schedule tasks. Estimate the time required for each activity and determine the critical path.

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