Central rate of mortality - q or µ ?

Discussion in 'CT5' started by Procrastinator, Apr 22, 2009.

  1. Hi, can anyone help me with this please?

    To calculate Standard Mortality Ratio, if a question asks to use a standard population from the tables, e.g. ELT15, should the central rate of mortality be taken as qx or µx?

    I am sure someone (can't recall whether ActEd tutor or uni lecturer) said the central mortality rates should be taken as µ but the solutions to April 2008 use qx...Can someone clarify this for me please?
     
  2. didster

    didster Member

    More of an CT4 type question

    Initial rate - q
    Central rate - m (q and mu are much more common)
    (Central) Force of mortality - mu

    mu and m are used with central exposed to risk
    q is used with initial exposed to risk

    Only question in April 2008 with ELT is #9. It provided initial exposed to risk and asks you to calculate expected deaths, so q rates are what you need.
     
  3. Thanks didster, that was really helpful. I didn't pick up on the Initial Exposed to Risk...
     

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