Into how many categories the population of the nation is generally group
Answers
The categories are:
(i) Children (below 15 years) who are economically unproductive and need to provide food, clothing, education and health care to them.
(ii) Working age (15 to 59 years), which are economically productive and biologically reproducible. They include working populations.
(iii) Aged or elderly (60 years and above) who can be financially productive, although they may retire. They are working voluntarily but they are not available for employment through recruitment.
Population pyramid, or age structure graph, is a simple graph that expresses the complex social narrative of the population through its size. Demographics use these simple graphs to evaluate the extent of development for a given population - usually a personalized nation - and to make predictions about the types of services that would require population. Schools, hospitals, homes, etc. And while each population pyramid is unique, most can be classified into three prototypical sizes: large (young and growing), infectious (elderly and shrinking), and stable (low or no population growth) Let us dive deeper into trends while describing these three types of population and its needs. The population is not a pyramid supporter?
Classification of population can also be explained
Three basic sizes of population pyramid
Expansive
The detailed population pyramid is used to describe the youth and the growing population. They are often marked with their distinctive 'pyramid' shape, which has broad base and narrow top. The expanded population pyramid shows a large percentage of the population in the younger age group, usually with the size of small size in the size of each age group. These types of populations are generally representative of developing countries, whose population often has high reproduction rates and average life expectancy is less than expected.
constrictive
Pyramid of infectious population is used to describe aging and shrinking population. Infectious pyramids often look like bees and usually have an inverted shape with graph tapping in the bottom. In younger groups, there are small percentages of infectious pyramid people, and generally there is a specialty of countries with high levels of social and economic development, where access to quality education and health care is available in a large part of the population.
Stable
Stable, or stable, population pyramids are used to describe the population which are not growing. They are characterized by their rectangular shape, which exhibit a somewhat similar percentage in cohorts of age that bend towards the top. These pyramids often characterize developed nations, where birth rate is low and overall quality of life is high.