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Business Analysis and Decision-Making

Critical path analysis

  • 2 things to know
  • A2 Unit 3

Overview

Critical path analysis, earliest start time of an activity and how earliest start times are calculated.

What you need to know

Answer each one before you reveal it.

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Key term

State two things critical path analysis tells a project manager.

Key term

What is meant by the earliest start time of an activity?

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    What is critical path analysis?

    Model answer

    Critical path analysis is a technique for planning a project by identifying the order of its activities and the shortest time in which the whole project can be completed.

  2. 2

    State two things critical path analysis tells a project manager.

    Model answer

    The minimum duration of the whole project, and which activities cannot be delayed without delaying the project.

  3. 3

    Define the critical path.

    Model answer

    The critical path is the sequence of activities with no spare time, so that any delay to one of them delays the entire project.

  4. 4

    What is meant by the earliest start time of an activity?

    Model answer

    The earliest start time is the soonest an activity can begin, once every activity that must precede it has been completed.

  5. 5

    Explain how earliest start times are calculated.

    Model answer

    They are worked out forwards from the start of the network, and where several activities lead into a node the highest finishing time is taken.

  6. 6

    What is meant by the latest finish time of an activity?

    Model answer

    The latest finish time is the latest an activity can be completed without delaying the whole project.

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