Population Flashcards
(12 cards)
what is population?
population refers the number of people living in an place at a particular time
what is demography?
demography is the study of the characteristics of a population.
what are some characteristics of a population?
age, sex, religion, ethnicity, size
what are 4 sources of demographic information?
- A population census done by the Central Statistical Office every 10 years to determine how and why population changes occur.
- Immigration and customs
- Religious institutions
- Registrar of births, deaths and marriages
what are 5 uses of demographic information?
- Welfare and Social Services
- Housing
- Education
- Infrastructure
- Job creation
what does a population’s age structure show?
A population’s age structure shows the distribution across the various age groups.
what are characteristics of an expansive population pyramid?
- high birth rate, relatively short life expectancy
what are characteristics of a constrictive population pyramid?
declining birth rate, aging population, low death rate
what are characteristics of a stationary population pyramid?
stable population, low birth rate, low death rate
define and outline three factors that influence age structure
Fertility Rates: The fertility rate refers to the number of children a woman would have if she were to live through her childbearing years. Higher birth rates lead to a younger age structure and lower birth rates lead to an older age structure.
Death Rates: The death rate is the number of deaths in a population over a specific time period. Changes in the death rate can significantly impact the age structure.
Migration: Migration is the movement of people from one place to another. There may be increased emigration of young adults and increased immigration of older ones.
What is the dependency ratio and how is it calculated?
The ratio of dependent people to economically active people.
Calculation:
Number of people ages 0-15 + Number of people ages 65+ divided by the Number of people 16-64
What is meant if there’s a high or low dependency ratio?
A high dependency ratio indicates that the number of dependent people is high, and there is a greater demand on the working population to make up for it.
A low dependency ratio indicates that there are little dependent people and there’s a sufficient/high working population potentially leading to economic growth.
