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Risk and Uncertainty

Forums › Ask ACCA Tutor Forums › Ask the Tutor ACCA APM Exams › Risk and Uncertainty

  • This topic has 3 replies, 3 voices, and was last updated 10 months ago by Ken Garrett.
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  • Author
    Posts
  • October 25, 2022 at 6:06 am #669898
    Christie9693
    Participant
    • Topics: 23
    • Replies: 7
    • ☆

    Unit 7 Example 1

    Can u please explain the answer for (c) What is the most that John would be prepared to pay for perfect knowledge as to the
    level of normal demand?

    October 25, 2022 at 7:33 am #669901
    Ken Garrett
    Keymaster
    • Topics: 10
    • Replies: 10332
    • ☆☆☆☆☆

    Using the expected value approach, the best that can be done is to choose a contract size of 700 and on average earn 4,600.

    With perfect information you hire someone who will tell you for each period what demand will be. This does not change the probabilities of each demand occurring any more than a perfect weather forecast changes the probability that it will rain tomorrow.

    So, using the pay-off table:

    If the forecaster says that demand will be 400, you will contract for 800 making 4400, the best profit for that condition.

    If the forecaster says demand will be 500, you will contract for 700, making 4600.

    Similarly for forecasts of 700 and 900 you would be able to make 5000 and 5400.

    AS I said, these best profits will still occur with their old probabilities so long term your profits will be:

    0.2 x 4400 + 0.3 x 4600 + 0.4 x 5000 + 0.1 x 5400 = 4800

    Without the forecast you could make and average of 4600, with it you can make 4800, so the maximum to pay is 200.

    November 8, 2022 at 11:56 am #670975
    jonathanlecuyer
    Participant
    • Topics: 1
    • Replies: 6
    • ☆

    Hi, regarding pay off table, there was a change in the syllabus:

    Topics leaving the paper: There are two significant changes to be aware of:
    1. Risk and uncertainty (previously syllabus section B) has been removed as a topic that can be examined numerically (expected values, maximax, maximin, minimax regret) and repositioned as a discussion area (syllabus section A1g).

    2. Corporate failure has been removed from the syllabus

    November 8, 2022 at 1:34 pm #670984
    Ken Garrett
    Keymaster
    • Topics: 10
    • Replies: 10332
    • ☆☆☆☆☆

    1 All of the PM syllabus is deemed knowledge for APM and Section 6(d) of that syllabus states:

    “Apply the techniques of maximax, maximin, and minimax regret to decision-making problems including the production of profit tables”. It’s worth looking at ACCA’s reply to queries about another numerical subject in APM FAQs:

    Q The examiners’ approach article states that the exam will require less computational work. Will learning curves, data tables and joint-probability tables still be examinable?

    A Yes, as they are assumed knowledge from the Performance Management syllabus.

    I agree that a big number-crunching question on risk and uncertainty might be unlikely but, for example, there would be no reason why a pay-off table could not be presented in the question (creating a pay-off table is really a rather general skill) and candidates then asked to apply/discuss maximin etc as decision-making approaches deeply entrenched in decision makers’ attitude to risk.

    2 Corporate failure is not in our notes or lectures.

    Thanks.

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