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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 26 March 2013

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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 States 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.
Solution? Age specific rates:
fertility/mortality +
Standardised rates
(example 3.1) P(n) = P(o)e Exponential Population
Growth Rate rn 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 http://www12.statcan.ca/english/census01/products/analytic/companion/age/cda01pymd.cfm What to look for: high prop of which age? high fertility? survival rates? longevity? Life Expectancy? http://www.gapminder.org/world/#$majorMode=chart$is;shi=t;ly=2003;lb=f;il=t;fs=11;al=30;stl=t;st=t;nsl=t;se=t$wst;tts=C$ts;sp=5.59290322580644;ti=1800$zpv;v=0$inc_x;mmid=XCOORDS;iid=phAwcNAVuyj1jiMAkmq1iMg;by=ind$inc_y;mmid=YCOORDS;iid=0ArfEDsV3bBwCcGhBd2NOQVZ1eWowNVpSNjl1c3lRSWc;by=ind$inc_s;uniValue=8.21;iid=phAwcNAVuyj0XOoBL_n5tAQ;by=ind$inc_c;uniValue=255;gid=CATID0;by=grp$map_x;scale=log;dataMin=282;dataMax=119849$map_y;scale=log;dataMin=1.9;dataMax=682$map_s;sma=49;smi=2.65$cd;bd=0$inds= 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 http://www.significancemagazine.org/details/webexclusive/1056009/Ageing-Europe.html EU White paper on Demographic Change (2006):
Full transcript