Age Composition

Question 1

Define Age Composition.

Answer 1

The relative numbers of people at different ages in a population

Question 2

What is the median age of a population?

Answer 2

age at which half of the population is younger and half the population is older

Question 3

What is the dependency ratio?

Answer 3

ratio of dependent aged people to working aged people

(pop of 0-14 + pop 65 older) / pop 15-64

Question 4

In 2025 will population ages 65 and older percentage increase or decrease?

Answer 4

increase

Question 5

What is the oldest country?

Answer 5

Japan

Question 6

Where do we rank in life expectancy in the world?

Answer 6

36th

Question 7

Define what a population pyramid is

Answer 7

A graphic method to simultaneously describe the age and sex of a population by displaying the number (or percentage) of makes and females in each age category.

Question 8

What does a rapid growth population pyramid look like?

Answer 8

pyramid shape because cohorts at bottom are increasingly large

Question 9

What does a slow growth population pyramid look like ?

Answer 9

• box-like, possibly small increases in bottom cohorts
• still narrowing at the bottom
• but still slightly more narrow at top due to effects on mortality

Question 10

What does a declining rapidly pyramid look like?

Answer 10

• narrowing at the bottom

- but still slightly more narrow at top due to effects of mortality

Question 11

What is age structure shaped by? (3)

Answer 11

1. Fertility
2. Mortality
3. Migration

Question 12

What has the largest impact on age structure?

Answer 12

Fertility; adds young ppl, high fertility creates a young age structure