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| Demographic Balancing Equation× | Dependency Ratio× | |
|---|---|---|
| Tudományterület | Demográfia | Demográfia |
| Módszercsalád | Process / pipeline | Process / pipeline |
| Keletkezés éve≠ | 1976 | 1956 |
| Megalkotó≠ | Classical demographic accounting identity | Standard demographic practice (United Nations / national statistical offices) |
| Típus≠ | Population accounting identity for change over a period | Ratio summarizing the age structure of economic dependency |
| Alapmű | Preston, S. H., Heuveline, P., & Guillot, M. (2001). Demography: Measuring and Modeling Population Processes. Blackwell. ISBN: 9781557864512 | Preston, S. H., Heuveline, P., & Guillot, M. (2001). Demography: Measuring and Modeling Population Processes. Blackwell. ISBN: 9781557864512 |
| Alternatív nevek≠ | Balancing Equation of Population Change, Population Accounting Equation, Components of Population Change Identity | Age dependency ratio, Youth and old-age dependency ratio, Total dependency ratio, Bağımlılık Oranı |
| Kapcsolódó | 4 | 4 |
| Összefoglaló≠ | The demographic balancing equation is the fundamental accounting identity of population change: a population at the end of a period equals its size at the start, plus births, minus deaths, plus in-migrants, minus out-migrants. It is the bookkeeping rule that ties together all the components of population dynamics and guarantees internal consistency in population estimates and projections. Because it is an exact identity, it also serves as a powerful estimation tool — any single unknown component, most often net migration, can be recovered as the residual once the others are known. | The age dependency ratio is a simple summary measure of a population's age structure that expresses the number of people in 'dependent' age groups — children and the elderly — relative to those of working age, conventionally per 100 working-age persons. It is split into a youth dependency ratio and an old-age dependency ratio, and it is among the most widely used demographic indicators of the potential economic burden an age structure places on its productive population. |
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