What is population pyramid in demography
Demography
Demography is the statistical study of populations, especially human beings. As a very general science, it can analyze any kind of dynamic living population, i.e., one that changes over time or space (see population dynamics).
How do you create a population pyramid?
Oct 21, 2013 · A Population Pyramid is a graph that shows the age-sex distribution of a given population. It a graphic profile of the population’s residents. Sex is shown on the left/right sides, age on the y-axis, and the percentage of population on the x-axis. Each grouping (ex: males aged 0-4) is called a cohort.
How to create your own population pyramid?
What is population pyramid in demography? A Population Pyramid is a graph that shows the age-sex distribution of a given population. It a graphic profile of the population's residents. Sex is shown on the left/right sides, age on the y-axis, and the percentage of population on the x-axis. Each grouping (ex: males aged 0-4) is called a cohort.
What is a population pyramid and what does it show?
Mar 03, 2022 · Population pyramids are essentially infographics or graphical representations of statistics regarding the age and sex of a population. Population pyramids tend to form a general triangle shape due...
What does population pyramid stand for?
Apr 18, 2019 · Population pyramids visualize the demographic structure of a population. The width represents the size of the population of a given age; women on the right and men to the left. The bottom layer represents the number of newborns and above it …
What is population pyramid?
What are the 4 stages of population pyramids?
What is population pyramid and its importance?
What are the 5 population pyramids?
What are the 3 types of population pyramids?
What are types of population pyramid?
What can population pyramids tell us?
What is population pyramid for Class 8?
What are the three types of population pyramid?
There are three main types of population pyramids which are categorized based on shape: Expansive population pyramids are triangular and depict yo...
What are the 5 stages of a population pyramid?
Population pyramids go through five main stages: The high fluctuating stage occurs first where there is high birth and death rates and a large you...
What is an example of a population pyramid?
An example of a population pyramid would be a infographic which depicts the age groups within a population upon a vertical axis, while the populati...
What does a population pyramid tell us about?
Population pyramids always depict the statistics regarding age groups and sex within a population. The age groups are depicted on the vertical axis...
What is population pyramid?
A population pyramid is a graphical and representative tool used to depict and analyze populations of people, and display the two main characterist...
What is a population pyramid?
Population Pyramids are ideal for detecting changes or differences in population patterns. Multiple Population Pyramids can be used to compare patterns across nations or selected population groups. The shape of a Population Pyramid can be used to interpret a population.
What are the three types of population pyramids?
There are three types of population pyramids: expansive, constrictive, and stationary . Expansive population pyramids depict populations that have a larger percentage of people in younger age groups. Populations with this shape usually have high fertility rates with lower life expectancies.
What is the population pyramid?
From Wikipedia, the free encyclopedia. A population pyramid or " age-sex pyramid " is a graphical illustration of the distribution of a population (typically that of a country or region of the world) by age groups and sex; it typically forms the shape of a pyramid when the population is growing. Males are usually shown on ...
What are the different types of population pyramids?
Each country will have a different population pyramid. However, population pyramids can be categorised into three types: stationary, expansive, or constrictive. These types have been identified by the fertility and mortality rates of a country.
How do pyramids shape?
In the demographic transition model, the size and shape of population pyramids vary. In stage one of the demographic transition model, the pyramids have the most defined shape. They have the ideal big base and a skinny top. In stage two, the pyramid looks similar, but starts to widen in the middle age groups. In stage three, the pyramids start to round out and look similar in shape to a tombstone. In stage four, there is a decrease in the younger age groups. This causes the base of the widened pyramid to narrow. Lastly, in stage five, the pyramid starts to take on the shape of a kite as the base continues to decrease. The shape of the population is dependent upon what the economy is like in the country. More developed countries can be found in stages three four and five while the least developed countries have a population represented by the pyramids in stages one and two.
What stage of the pyramid is similar to a tombstone?
In stage two, the pyramid looks similar, but starts to widen in the middle age groups. In stage three, the pyramids start to round out and look similar in shape to a tombstone. In stage four, there is a decrease in the younger age groups. This causes the base of the widened pyramid to narrow.
How does a pyramid show fertility?
If the pyramid has a broad base, this indicates that a relatively high proportion of the population lies in the youngest age band, such as ages 0–14, which suggests that the fertility rate of the country is high and above population sub-replacement fertility level. In such a case, the older population is declining with age, due to a combination of mortality and an increase in the number of births over time. There are usually more females than males in the older age ranges since women have a longer life expectancy: for a variety of reasons including women partaking less in risky behaviors.
How many people are under 25 in Africa?
It is estimated that around 65% of the regional population is under the age of 25. The youth bulge in the Middle East and North Africa has been favorably compared to that of East Asia, which harnessed this human capital and saw huge economic growth in recent decades.
What is stationary population?
In a stationary population, the numbers of births and death roughly balance one another.
What is the pyramid of population?
Population pyramids visualize the demographic structure of a population. The width represents the size of the population of a given age; women on the right and men to the left. The bottom layer represents the number of newborns and above it you find the numbers of older cohorts.
How many people are there in the world in 2019?
Now in 2019, there are 7.7 billion. By the end of the century the UN expects a global population of 11.2 billion. This visualization of the population pyramid makes it possible to understand this enormous global transformation. Population pyramids visualize the demographic structure of a population. The width represents the size of the population ...
What is the blue pyramid?
In the darkest blue you see the pyramid that represents the structure of the world population in 1950. Two factors are responsible for the pyramid shape in 1950: An increasing number of births broadened the base layer of the population pyramid and a continuously high risk of death throughout life is evident by the pyramid narrowing towards the top. There were many newborns relative to the number of people at older ages.
When does a country benefit from a demographic dividend?
At a country level “peak child” is often followed by a time in which the country benefits from a “demographic dividend” when the proportion of the dependent young generation falls and the share of the population in working age increases. 3
What is a population pyramid?
Population Pyramids. A population pyramid graphically illustrates the age and gender distribution of a given population. The shape of the pyramid conveys details about life expectancy, birth, fertility, and mortality rates. Additional data that can be extrapolated from a population pyramid include the effects of historical events, ...
What is the birth rate?
Birth rate (or crude birth rate): number of live births per 1,000 population in a given year
Which country has a wide base?
Expansive population pyramid (Nigeria): Note the wide base, which is indicative of a high fertility rate.
What were the factors that affected the growth of the population?
Malthus identified these factors as war, famine, and disease (Malthus 1798). He termed them “positive checks” because they increase mortality rates, thus keeping the population in check. They are countered by “preventive checks,” which also control the population but by reducing fertility rates; preventive checks include birth control and celibacy. Thinking practically, Malthus saw that people could produce only so much food in a given year, yet the population was increasing at an exponential rate. Eventually, he thought people would run out of food and begin to starve. They would go to war over increasingly scarce resources and reduce the population to a manageable level, and then the cycle would begin anew.
What are the four theories of population?
Below we will look at four theories about population that inform sociological thought: Malthusian, zero population growth, cornucopian, and demographic transition theories.
What is the fertility rate of a society?
The fertility rate of a society is a measure noting the number of children born. The fertility number is generally lower than the fecundity number, which measures the potential number of children that could be born to women of childbearing age.
How many people are on the move on Earth?
At over 7 billion, Earth’s population is always on the move. (Photo courtesy of David Sim/flickr)
Why do sociologists believe we are expanding the population of our planet?
First, technological increases in food production have increased both the amount and quality of calories we can produce per person. Second, human ingenuity has developed new medicine to curtail death from disease.
Who wrote the essay on population?
Malthus, Thomas R . 1965 [1798]. An Essay on Population. New York: Augustus Kelley.
Is Afghanistan more male or female?
Comparing the three countries in this table reveals that there are more men than women in Afghanistan, whereas the reverse is true in Sweden and the United States. Afghanistan also has significantly higher fertility and mortality rates than either of the other two countries. Do these statistics surprise you? How do you think the population makeup affects the political climate and economics of the different countries?
Introduction
What Is Population Pyramid?
- A Population Pyramid also known as Age -Sex pyramid, is basically a graphical illustration of the distribution of various age groups in males and females in a region. This pyramid helps us to understand the past, present trends, and also predict the future trends of demographic variables of a country. The first population pyramid was published in 1...
Other Information Which Helps with Interpretation
- The Population Pyramid is usually represented through the following procedure. The shape of the bar diagram gives enough information about the age group and the sex of a specific population. The broad base of the pyramid indicates a large number of younger populations in the region as compared to the tapering top which indicates the relatively lower proportion of the older age gro…
Population Pyramids and Demographic Transition
- According to demographers who study the historical changes in the age and gender variation along with the study of the fertility and mortality of the population, the transition of the demography can be represented by population pyramids. The stages of the transition can be indicated by population pyramids wherein the shape of which gives useful information on the de…
Overview
A population pyramid (age structure diagram) or "age-sex pyramid" is a graphical illustration of the distribution of a population (typically that of a country or region of the world) by age groups and sex; it typically takes the shape of a pyramidwhen the population is growing. Males are usually shown on the left and females on the right, and they may be measured in absolute numbers or as a p…
Structure
A population pyramid often contains continuous stacked-histogram bars, making it a horizontal bar diagram. The population size is shown on the x-axis (horizontal) while the age-groups are represented on the y-axis (vertical). The size of each bar can be displayed either as a percentageof the total population or as a raw number. Males are conventionally shown on the left and females on the right. Population pyramids are often viewed as the most effective way to graphically depi…
Types
Each country will have a different population pyramid. However, population pyramids can be categorised into three types: stationary, expansive, or constrictive. These types have been identified by the fertility and mortality rates of a country.
"Stationary" pyramid or constant population pyramid A pyramid can be described as stationary if the percentages of population (age and sex) remain approximately constant over time. In a stati…
Youth bulge
Gary Fuller (1995) described a youth bulge as a type of expansive pyramid. Gunnar Heinsohn (2003) argues that an excess in especially young adult male population predictably leads to social unrest, war and terrorism, as the "third and fourth sons" that find no prestigious positions in their existing societies rationalize their impetus to compete by religion or political ideology.
See also
• Age class structure
• Baby boom
• Demographic analysis
• Demographic transition
• List of countries by median age
External links
• World Population Prospects, the 2010 Revision, Website of the United Nations Population Division with population pyramids for all countries
• U.S. Census Bureau, International Statistical Agencies
• U.S. Census Bureau, International Database (IDB)