population pyramids. objectives §what is a population pyramid? §how to read a population pyramid?...
TRANSCRIPT
POPULATION PYRAMIDS
Objectives
WHAT is a population pyramid?HOW to read a population pyramid?Recognise SHAPES of population
pyramids. IMPORTANCE of population
pyramids.
WHAT IS A POPULATION PYRAMID?
It is a diagram that gives information about the proportion of males and females in each age group.
Policy Planning • future housing estates• future schools• future jobs
Comparison with other countries• developed (US) vs developing (India)
Normally Males are on the left side and Females are on the right side Age categories are in 5 year intervals labeled up the center Age groups are divided into:
- proportion of young people (0 -14 )- proportion of working people (15 – 59)- proportion of elderly people (60+)
The horizontal axis is measured in numbers appropriate for the country. Each pyramid tells a story about the past, present & future of a country &
its people
What is a population pyramid?
Vertical Axis - Age Groups
Horizontal Axis – Percentage / number
Young dependents
Working population
Elderly dependents
HOW TO READ A POPULATION PYRAMID?
Read the title e.g. country or city or racial group
Comment on general shape of the pyramid
Note the proportion of people in various age groups
Note the sex ratio Interpret the data
WHAT TO LOOK FOR IN A POPULATION PYRAMID?
SHAPE OF THE SIDES Concave (curved in) sides indicates a high
death rate and convex (curved out) indicates a low death rate.
Hong Kong2000
Taiwan2000
Hong Kong2000
Taiwan2000
WHAT TO LOOK FOR IN A POPULATION PYRAMID?
WIDTH OF THE BASE Birth rates varies with the width of the base. A
WIDE base indicates high birth rate and a NARROW base indicates low birth rates
Indonesia2000
Malaysia2000
WHAT TO LOOK FOR IN A POPULATION PYRAMID?
Bumps in the sides or Symmetry Statistically speaking pyramids should be relatively
symmetrical. Any ASYMMETRY indicates a difference in the male and female population. IRREGULARITIES in the sides indicate a demographic difference.
UK 2000
Netherlands2000
Population pyramid that has a triangular / pyramid shape
Wide base of this population indicates a HIGH birth rate
Narrow top indicates HIGH death rate
Rapid Growth indicates Lower Standard of living.
High birth rate due to poor access to lack of birth control, education
High death rate due to lack of medication, education, nutrition
RAPID GROWTH
Stable populations are characteristics of high standard of living due to: Low birth rate due to
good family planning, access to birth control, financial planning, education
Low death rate due to good medical care, nutrition, education
SLOW GROWTH
Negative growth population have a narrower base that the reproductive age population
This indicates decrease population trend
Low birth rate reveals a more developed country
NEGATIVE GROWTH
COMPARISON WITH OTHER COUNTRIES
MORE DEVELOPED COUNTRIES
Countries with high level of development and great deal of technology and manufacturing• Great number of automobiles,
doctors, computers, telephones
• Low Death Rates• High Standard of Living• Very good Healthcare• Literacy rate in the 90’s• Per Capita incomes $30,000
and above• Low Birth Rates
United States, Australia, France, Germany, Japan, England
COMPARISON WITH OTHER COUNTRIES
NEWLY INDUSTRIALIZED COUNTRIES
Increase in income but standard of living has not improved (barely going through (INDUSTRIAL REVOLUTION)
Medium to Low death rate Improving standard of living Improving Health Care Literacy Rates in the 70% to
80% Per Capita Incomes rising
$10,000-$30,000 Birth Rate Declining
Brazil, Russia, India, China, Mexico
COMPARISON WITH OTHER COUNTRIES
LESS DEVELOPED COUNTRY Countries in the process of
becoming industrialized, not economically advanced
• Concentrated on agriculture, lack investment, small amount of doctors and hospitals
• High Death Rate• Low Standard of Living• Poor Health Care• Low Literacy Rates-Below 50%• Low Per Capita Incomes $0-
$5,000• High Birth Rate
Afghanistan, Countries in Africa,