# POPULATION PYRAMIDS.

## Presentation on theme: "POPULATION PYRAMIDS."— Presentation 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?
Young dependents Working population Elderly dependents Vertical Axis - Age Groups Horizontal Axis – Percentage / number

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 Kong 2000 Taiwan 2000

Hong Kong 2000 Taiwan 2000

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

Indonesia 2000 Malaysia 2000

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 Netherlands 2000

RAPID GROWTH 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

SLOW 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

NEGATIVE 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

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,