Demographics Flashcards
what is the role of age and sex stucture
to forecase trends with respect to population growth or decline, as well as dependency ratios within the country
what is the dependency ratio?
the percentage of the population too young or too old to work who are dependen on those of working age (economically active population)
what happens if the economically active population is low?
implications on economic growth
limit in the provision of services in the country
what do age and sexstructure determine?
population’s median age
what does a high median age mean?
the population is aging
how is a population pyramid represented?
in age groups of 5 years
what is doubling time?
the amount of time in which a given population will double, based on its annual growth rate
what does a rapid doubling time mean?
the population will double in size very quickly and it can put a huge strain on existing resources
what is fertility rate?
refers to the average number of children that a woman will have throughout her reproductive life
what is birth rate?
the number of live births per 1000 in the population
what does a drop in fertility rate indicate?
the country is moving through the Demographic Transition Model
reasons the birth rate may decline
better education
increased use of contraceptives
more career oriented women
having children later in life
what is the replacement fertility rate?
where a woman has enough childrento replace their parents
what is mortality rate/death rate?
number of people dying per 1000 in the population at the current time
what is infant mortality rate?
number of babies between birth and a year who die
