This chapter begins by discussing the conceptual difference between demographic estimates, forecasts and projections. In addition, the chapter reviews different projection methods and their use depending on the availability of relevant data and purpose for which the projections are being made. The chapter demonstrates the use of Gompertz and Logistic models in the projection of whole populations. A section of the chapter shows how the cohort-component method is used to obtain population projections by age and sex. It examines data requirements and variations on the assumptions about future trends and patterns in fertility, mortality and migration. Other methods of projection such as those involving the cohort change ratios are also discussed. In addition, methods for the projection of populations with given socio-economic characteristics is provided. Examples of the computational steps of various projection methods are also given.
KeywordsMigration Rate Total Fertility Rate Population Projection Survival Ratio Labour Force Participation Rate
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