CM2 APRIL 2019 PART B EXAM, Q3 V)

Discussion in 'CM2' started by Sankar Krishna, Feb 15, 2022.

  1. Sankar Krishna

    Sankar Krishna Keen member

    (v) Calculate the expected shortfall relative to the loan repayment.

    from part iv) The Probability that investor will be able to repay loan is 0.1985.
    Hence shortfall probability i.e. P(Value of portfolio @t=2 < 15000) = 1 - 0.1985 = 0.8015
    Conditional shortfall = E(shortfall) / P(shortfall)
    E(shortfall) = summation Probability*max(15000 - value of portfolio @t=2 ,0) = 2962.4
    Hence conditional shortfall = 2962.4/0.8015 = 3696.07

    Doubt: The answer given in the solution excel file ( worksheet v, cell L11) available from the past papers section IFoA, is 14924
    E(shortfall) / 0.1985 = 2692.4 / 0.1985 = 14924, where 0.1985 is P(repaying loan) = 1-P(shortfall).
    Wrong figure for probability of shortfall is considered here?

    Thanks in advance!
     
  2. Steve Hales

    Steve Hales ActEd Tutor Staff Member

    You're correct, the denominator should be P(shortfall) = 1 - P(repaying loan).
     
  3. Sankar Krishna

    Sankar Krishna Keen member

    Okay. Thanks!
     

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