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Duplicate policies in mortality data

Published online by Cambridge University Press:  18 August 2016

R. H. Daw
R. H. Daw
Affiliation:
Powers-Samas Accounting Machines Ltd.
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Extract

The question of the effect of duplicate policies on the variance of the number of deaths in a mortality experience based on policies (not lives) has been discussed in two recent papers (Seal [1947] and Beard and Perks [1949]). The second of these papers shows that this variance depends on the sampling process envisaged and gives formulae for the variance under four such processes. It is the purpose of this paper to consider some practical aspects of the treatment of duplicates in a mortality experience.

Type
Research Article
Information
Journal of the Institute of Actuaries , Volume 77 , Issue 2 , September 1951 , pp. 261 - 267
Copyright
Copyright © Institute and Faculty of Actuaries 1951

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References

REFERENCES

Beard, R. E. and Perks, W. (1949). The relation between the distribution of sickness and the effect of duplicates on the distribution of deaths. J.I.A. LXXV, 75–86.Google Scholar
Daw, R. H. (1945). On the validity of statistical tests of the graduation of a mortality table. J.I.A. LXXII, 174–90.Google Scholar
Seal, H. L. (1947). A probability distribution of deaths at age x when policies are counted instead of lives. Skand. Aktuar Tidskr. 1947, pp. 18–43.Google Scholar
Solomon, L. (1948). The analysis of heterogeneous mortality data. J.I.A. LXXIV, 94–112.Google Scholar
Vajda, S. (1945). The analysis of variance of mortality rates. J.I.A. LXXII, 240–45.Google Scholar
Walsh, J. E. (1950). Large sample tests and confidence intervals for mortality rates. J. Amer. Statist. Ass. XLV, 225–37.Google Scholar