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POPULATION PYRAMIDS

Population pyramids are essential tools for visualizing the age and sex distribution of a population. They depict the proportion of males and females across different age groups and provide insights into birth rates, death rates, and migration patterns. By learning to read these diagrams, one can identify the general shape, proportion of age groups, and sex ratio. From triangular to rectangular forms, each shape represents different demographic stages. Understanding these pyramids assists in policy planning, housing, education, and job creation, reflecting a country's socio-economic status.

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POPULATION PYRAMIDS

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  1. POPULATION PYRAMIDS

  2. Objectives • WHAT is a population pyramid? • HOW to read a population pyramid? • Recognise SHAPESof population pyramids. • IMPORTANCE of population pyramids.

  3. What is a population pyramid? • It is a diagram that gives information about the proportion of males and females in each age group. • Also shows: - proportion of young people (0 -14 ) - proportion of working people (15 – 59) - proportion of elderly people (60+)

  4. What is a population pyramid? Vertical Axis - Age Groups Elderly dependents Working population Young dependents Horizontal Axis – Percentage / number

  5. 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

  6. Types of Population Pyramid 1. Triangular-shaped 2. Beehive-shaped Pyramid 3. Rectangular-shaped Pyramid Shape of pyramids is controlled by • births, • deaths, & • migrations.

  7. Triangular-shaped Pyramid(Broad-based Pyramid)

  8. Broad-based Pyramid Title: India, 2000 Shape: Broad Base - high birth rates Narrow Top - small elderly pop - high death rate Proportion: - Large proportion of young - high young dependency ratio Sex Ratio: Balance pyramid - Balance sex ratio

  9. Indonesia 2000 Malaysia 2000

  10. Beehive-shaped Pyramid

  11. Beehive-shaped Pyramid Title: Singapore, 2000 Shape: Rocket-shaped / Narrow Base – Low Birth Rates, Slow pop growth Proportion: Large proportion of working population, 15-59 yr old - large group of economically active pop Sex Ratio: Balanced pyramid

  12. Hong Kong 2000 Taiwan 2000

  13. Rectangular-shaped Pyramid

  14. Rectangular Pyramid Title: Netherlands, 2000 Shape: Rectangular-shaped - Zero Pop Growth Narrow Base - Low Birth Rates - Life-expectancy is high e.g. 80+ - Low death rates Proportion: Bars of equal length - Balance Proportion Sex Ratio: Balance pyramid - Balance Sex Ratio

  15. UK 2000 Netherlands 2000

  16. Population Pyramids in Transition

  17. Each pyramid tells a story about the past, present & futureof a country & its people.

  18. Importance of Population Pyramids • Policy Planning ~ future housing estates ~ future schools ~ future jobs • Comparison with other countries ~ developed (US) vs developing (India)

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