Explanatory Notes on
Main Statistical Indicators
Households include family
household (including single household) and collective households.
Total Population refers to the total
number of people alive at a certain point of time within a given area.
Population Birth Rate refers to the ratio
of the number of births to the average population during a certain period of
time (usually a year) in a certain region, which is often expressed in ‰.The
following formula is used:
In this formula, number
of births refers to live births, i.e. the births babies had showed any vital
phenomena regardless of the length of pregnancy, and annual average number of
population refers to the average number of the beginning and end of the year
(also can be replaced by midyear population).
Number of Births refers to live
births, i.e. the births babies had showed any vital
phenomena regardless of the length of pregnancy.
Death Rate refers to the ratio
of the number of deaths to the average population (or mid-period population)
during a certain period of time (usually a year) which is often expressed in ‰.
The following formula is used:
Natural Growth Rate of Population refers to the ratio
of natural increase in population (number of births minus number of deaths) in
a certain period of time (usually a year) to the average population (or
mid-period population) to the same period which is often expressed in ‰. The
following formula are applied:
or: Natural
Growth Rate of Population = Birth Rate – Death Rate
Sex Ratio is the indicator
reflects the ratio of the population of male to female in total population or
various age groups. Generally, it is often expressed in the ratio of male
population to 100 female. The calculating formula:
Permanent Population includes:
1. the
population living in the local countries, towns or streets, and registered as
permanent residences in the local countries, towns or streets.
2. the population having
been living in the local countries, towns or streets for more than half a year,
with the permanent residences outside the local countries, towns or streets.
3. the population having
been living in the local countries, towns or streets for less than half a year,
but having been apart from the countries, towns or streets where registered
their permanent residences for more than half a year.
4. the
population living in the local countries, towns or streets, with undetermined
residences.
5. the
population once living in the local countries, towns or streets, working or
studying in foreign countries now, and without permanent residences
temporarily.
City Population refers to the
population living in the urban area. Urban area refers to the municipal
districts, the cities without distrct being set up,
the neighborhood committees conected
with the actual construction of governments of districts and cities and other
areas.
Town Population refers to the
population living in the town areas. The town area refers to the seat of town
governments and other town beside the urban areas, the neighborhood committees conected with the seat
of governments and other areas.
Urban Population refers to city population
and town population.
Country Population refers to the total
population living in the areas beside the urban areas and town areas.
Agricultural Population refers to the
number of persons who have agricultural household registration.
Non-agricultural Population refers to the
number of persons that have non-agricultural household registration.
Composition of Birth refers to the ratio
of the number of births of a certain composition to the total births in the
same period during a certain period
of time (usually a year).
Household Size refers to the size
of a family, or the number of family members.