CPHLAB Demography [2026]✓ Flashcards
Scientific or statistical study of human populations
Demography
Populous, people
Demos
Graphic
To draw, illustrate
Used to describe changes in population size, distribution, composition, as guide for planning policy or program implementation and development and decision making of a government.
Demography
Group of individuals of same species living in the same geographical area at the same time.
Population
Demography focuses on different aspects of human populations:
Size, Distribution, Composition and Population Dynamics
Number of people in a given area at a given time
Size
The way how a population is dispersed in a geographical space at a given time.
Distribution
Number of person in sex, age and other demographical categories.
Composition
Study of the changes in the population size and structure over time
Population Dynamics
Ranked as 13th Most Populated country in the World
Philippines
Population in Philippines
113 Million
Philippines is ranked as ______ Most populated country in the world
13th
Provides factual base for divisions on matters of public policy and action
Sources of Demographic Data
An emuration or complete population count at a point in time within a specified geographical data.
Census
Conducts the population census for every 5 years, located in Quezon City.
Philippine Statistics Authority (PSA)
Where does PSA located?
Quezon City
How many years does PSA Conducts population census?
5 Years
Two Techniques Of Conducting Census:
Dejure and Defacto
This technique is the counting of people according to the permanent place of location or residence.
Dejure
This technique of conducting census refers to counting persons they are resent at the time of census period.
- Those who are present at the time of census.
Defacto
The registration of Vital Events
Civil Registry System
Civil Registry System
The registration of Vital Events
a _________________ is used to record statistics on vital events, such as births, deaths, marriages, divorces and fetal deaths.
civil registry system
It enables rates of population growth to be calculated.
Registration of Vital Events
Carried out in scientifically selected area which covers only a section or sample portion of the population under consideration.
Sample Surverys
- Result of dividing one quantity to another.
- Quotient of any two demographic quantities.
- Quantities the magnitude of one occurence of condition in relation to another.
Ratio (a/b or a:b)
Formula of Ratio
A/b or A:B
A type of ratio which indicates the relation in magnitude of a part of the whole.
Proportion
Usually expressed in percentage (%)
Proportion
Has enumerator, denominator and multiplier.
Proportion
Illegitimate Birth Ratio
Number of illegitimate live births/ Total # birth of live birth X 100
Measures the occurence of some particular event in a population during a given tme period.
Rate
Has a numerator, denominator, multiplier, specific given time period.
Rate
Death Rate Formula
number of death in one year/ Midyear Population X 1000
- Measures the occurence of some particular event in a population during a given time period.
- Percentage (%)
Rate
Has Numerator, Denominator, Multiplier, Specific Given Time Period
Rate
Refers to the composition of the population in terms of age, sex, race, etc.
Population Structure
Do not change in the life time of the individual (Age, Sex, Race, Year and Place of Birth)
Ascribed Characteristics
Can change (educational level, occupation, religion, languange, marital status)
Achieved Characteristics
Distribution by age of the population
Age Composition
It is also known as age structure or age distribution.
Age Composition
0-14 Years Old
Young