Lost in translation

(Dec 30, 2009)

Actuaries have a long-standing habit of using different terminology to statisticians.  This page lists some common terms used by actuaries in mortality work and their "translation" for a non-actuarial audience.  The terms and notation are those used by actuaries in the UK, but in every country I have visited the local actuaries have used similar notation.

Table 1. Common actuarial terms and their definition for statisticians.

Actuarial term  Actuarial notation
Statistical description
central exposed to risk Ecx The time exposed to risk of dying at age x.
curve of deaths tpxmuxplust Probability density function for the future lifetime of an individual currently alive and aged exactly x.
force of mortality mux


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Tags: central exposed-to-risk, curve of deaths, force of mortality, initial exposed-to-risk, mortality law, mortality rate, survival rate, waiting time, survival models

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