Demo Flashcards
(30 cards)
Study of population
Demography
Three main elements of demography
Size of population (census)
Composition
Distribution
Definition of census
A process of enumeration of people
Time of census
10 years
Procedures of census(3)
Enumeration
Demographic
Socioeconomic
Type of census 2
De jure de facto
De jure census
Counting individuals at their legal residence regardless of their physical presence.
De facto census
Counting individuals wherever they actually are a date of census
Arithmetic mean (2)
Two consecutive census
Mean annual increase
Most accurate estimation method
Geometric
Age structure what do u see in pyramid 2 things
Base births
Apex elderly
Mortality and emigration what do u see in pyramid
Shapenof sides
Lifestyle expectancy two things u see on pyramid
Height of pyramid and shape of apex
Median age
The point in the vertical axis of age through which passes the horizontal line that divides the surface area of the pyramid into two equal parts
The position of median age is inversely related to
Width of base
Dependency ratio
The dependency ratio describes the relation between the potentially self-supporting portion of the population and the dependent portions at the extreme of age (below 15 and above 65
Young dependency
Below 15
Old dependency
Above 65
3 factors affecting population
Mortality
Fertility
Migration
5 types of fertility (natality) rates
Crude birth rates
General
Age specific
Total
Gross reproduction rate
Simplest indicatior of fertility
Crude birth rate
Expressed as daughter per woman
Gross reproduction rate
Infant
Before age 1
Neonatal
Less than 28 days
