Page 46 - NGTK2018

EXPLANATION OF TERMINOLOGY, CONTENT AND CALCULATION
METHODOLOGY OF SOME STATISTICAL INDICATORS ON
POPULATION AND LABOUR

POPULATION
(usually a solar calendar year), calculated by the following formula:
Average population is the number of people on average for an entire period
rt
P t = P 0 x e
In which:
- Pt: Average population of calculated year;
- P0: Base year population;
- e: Natural logarithm, e = 2.71828;
- r: Population growth rate between the calculated time as compared to the base
time;
- t: Time duration from base time to calculated time (Number of calculated
years).
Urban population is the population of the territorial units which is designated as
urban areas by the State (wards, town).
Rural population is the population of the territorial units which is designated as
rural areas by the State (communes).
Population density is the average number of people per square kilometer of the
territorial area, calculated by dividing the population (time point or average) of a
certain residential area to the area of that territory. Population density can be
calculated for each province, district, commune, etc. to reflect the population
distribution by geography at a given time.

Population density = Population (persons)
2
(persons/km ) Territorial area (km )
2

Sex ratio of the population reflects number of males per 100 females. Sex ratio
of the population is determined by the following formula:

Total of males
Sex ratio of the population = × 100
Total of females

Crude birth rate: The indicator measures the fertility of the population, is one of
the two components of natural population increase. High or low value of crude birth
rate can affect the size, structure and population growth rate. Crude birth rate indicates
that for every 1000 people, how many live births are in the reference period.

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