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Characteristics of a Population

This presentation is a summary of section 3.2 of the textbook 'An Introduction to Actuarial Studies (Second Edition)'

Dominic Cortis

on 27 October 2017

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Transcript of Characteristics of a Population

Population Refers to a homogeneous group (could be insects/students) but in this case we are referring to the traditional aspect.
Characteristics of a Population
photo credit Nasa / Goddard Space Flight Center / Reto Stöckli
Advantages/Disadvantages of each:
-> Census (NSO website)
-> Population surveys (on a section of pop)
-> Registration Data (ex. Marriages)
-> Any other?
Sources of Information
Rates of Change
Summary Statistics
Sex ratio (diff at diff ages, why?)
Child-woman ratio
Dependency Ratio
Labour Force Participation Rate
Pt+1 = Pt + Natural Increase + New Migration
Natural Increase = Births less Deaths
Net migration = Immigrants - Emigrants
Crude rates are used (per 2k of population): disadvantages?
Female/Male structure
and age structure
really affect these ratios.
Age specific rates:
fertility/mortality +
Standardised rates
(example 3.1)
P(n) = P(o)e
Exponential Population
Growth Rate
Very Simple Model!
Group discussion: how do populations change over time and with respect to economic growth?
Demographic Transitions
Sanitation + Health
=> better Infant mortality
=> increase birth rates
=> low fertility rates
(family support lowers + careers + education)
=> longevity
What to look for: high prop of which age? high fertility? survival rates? longevity? Life Expectancy?
Boom in births in 1960s
Deaths -> First World War + Spenish Flue Influenza (1914-18)
Tied with Global Economy
Future: China, Resources
Malthusian view? http://www.stanford.edu/~ranabr/Malthusian%20and%20Neo%20Malthusian1%20for%20webpage%20040731.pdf
World Demography
EU White paper on Demographic Change (2006):
Full transcript