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Decision-Making Techniques

Critical Path Analysis

  • 6 things to know
  • Paper 2 and Paper 3

Overview

Network diagrams, earliest start and latest finish times, total float, and identifying the path that decides the length of a project.

What you need to know

Answer each one before you reveal it.

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Key term

What is Critical Path Analysis, and what is the critical path?

Numbers

What is the earliest start time, and what happens if the critical path slips?

Numbers

What is total float, and how is it calculated?

Key term

What aspect of project performance does CPA fail to measure?

Key term

What financial aspect of project management is not directly addressed by CPA?

Numbers

State the total-float formula.

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    What is Critical Path Analysis (CPA)?

    Model answer

    A project management technique that identifies the sequence of dependent activities and calculates the minimum time needed to complete a project.

  2. 2

    What is the purpose of Critical Path Analysis?

    Model answer

    To identify which activities are critical to completing the project on time and where resources can be allocated most effectively.

  3. 3

    What is a network diagram in the context of CPA?

    Model answer

    A diagram that represents project activities as nodes or arrows showing their sequence and dependencies.

  4. 4

    What is the critical path in a network diagram?

    Model answer

    The longest route through the network diagram, which determines the minimum project duration.

  5. 5

    How much float do activities on the critical path have?

    Model answer

    Zero float.

  6. 6

    What happens if an activity on the critical path is delayed?

    Model answer

    The entire project will be delayed.

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