Projection and Forecasting
Statistical data regarding population, like all other data, refer to the past; action and policy require knowledge of the future. What counts is not what the population has been, but what it will be. The cost of an annuity taken out today depends on future not on past mortality. Whatever continuities exist between past and future must be discovered and exploited if decisions regarding the future are to be soundly based, from the price of an annuity to the location of a retail store.
KeywordsProjection Matrix Functional Iteration Successive Moment Ultimate Population Death Curve
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