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Published online by Cambridge University Press: 27 November 2014
1. The exact value of qx is
On the assumption of an uniform distribution of deaths over the year of age
If deaths are not uniformly distributed all these quantities may differ. This may be shown by expressing the first and last in the terms of the second, thus by Taylor's theorem:—
* The equation may hold even if there is not an uniform distribution of deaths, but the conditions are unlikely to be fulfilled.
* It was pointed out in the discussion that the value for qx may be written and that the term in brackets could be obtained with sufficient accuracy from any similar mortality table available.