what are the age structure, net migration rate, death rate, median age, dependency rate? They are how to impact on in a country's economy? please, explain it nicely and elaborately
Answers
YESS
AGE STRUCTURE :-
The age structure of a population is an important factor in population dynamics. Age structure is the proportion of a population in different age classes. Models that incorporate age structure allow better prediction of population growth, plus the ability to associate this growth with the level of economic development in a region. Countries with rapid growth have a pyramidal shape in their age structure diagrams, showing a preponderance of younger individuals, many of whom are of reproductive age.
NET MIGRATION RATE
The net migration rate is the difference between the number of immigrants (people coming into an area) and the number of emigrants (people leaving an area) throughout the year. When the number of immigrants is larger than the number of emigrants, a positive net migration rate occurs. A positive net migration rates indicates that there are more people entering than leaving an area. When more emigrate from a country, the result is a negative net migration rate, meaning that more people are leaving than entering the area. When there is an equal number of immigrants and emigrants, the net migration rate is balanced.
DEATH RATE
Firstly, it is stated as MORTALITY RATE. Mortality rate, or death rate, is a measure of the number of deaths (in general, or due to a specific cause) in a particular population, scaled to the size of that population, per unit of time. Mortality rate is typically expressed in units of deaths per 1,000 individuals per year; thus, a mortality rate of 9.5 (out of 1,000) in a population of 1,000 would mean 9.5 deaths per year in that entire population, or 0.95% out of the total.
MEDIAN AGE
Median age is the age that divides a population into two numerically equally sized groups - that is, half the people are younger than this age and half are older. It is a single index that summarizes the age distribution of a population.
DEPENDENCY RATE or RATIO
The dependency ratio (or rate), is a measure of the number of dependents aged zero to 14 and over the age of 65, compared with the total population aged 15 to 64. This demographic indicator gives insight into the number of people of non-working age, compared with the number of those of working age. It is also used to understand the relative economic burden of the workforce, and has ramifications for taxation.
The dependency ratio(or rate) is also referred to as the total or youth dependency ratio.
Age Structure gives us the info that how many people in one country is in Working Class. Net Migration Rate allows us to determine the increasing population with the existing country's population growth, if net migration rate is positive it means that the population coming from abroad is increasing and it is vice-versa.