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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?.

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objectives
Objectives
  • WHAT is a population pyramid?
  • HOW to read a population pyramid?
  • Recognise SHAPESof population pyramids.
  • IMPORTANCE of population pyramids.
what is a population pyramid
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+)

what is a population pyramid4
What is a population pyramid?

Vertical Axis - Age Groups

Elderly dependents

Working population

Young dependents

Horizontal Axis – Percentage / number

how to read a population pyramid
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
types of population pyramid
Types of Population Pyramid

1. Triangular-shaped

2. Beehive-shaped Pyramid

3. Rectangular-shaped Pyramid

Shape of pyramids is controlled by

  • births,
  • deaths, &
  • migrations.
broad based pyramid
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

slide9

Indonesia

2000

Malaysia

2000

beehive shaped pyramid
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

slide13

Hong Kong

2000

Taiwan

2000

rectangular pyramid
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

slide16

UK 2000

Netherlands

2000

importance of population pyramids
Importance of Population Pyramids
  • Policy Planning

~ future housing estates

~ future schools

~ future jobs

  • Comparison with other countries

~ developed (US) vs developing (India)