Population, Poverty and Human Development
Population studies examine size, structure and change; poverty measures deprivation; human development measures whether growth improves people's lives. This domain tests census concepts, dependency ratio, literacy, sex ratio, poverty lines, the Human Development Index (HDI) and the Multidimensional Poverty Index (MPI).
Core rules and concepts
- Census counts population every ten years; India's latest census was 2011.
- Demographic transition: birth and death rates fall in stages as a country develops.
- Dependency ratio = (population aged 0-14 + 60+) ÷ population aged 15-59 × 100.
- Literacy rate counts people aged seven and above who can read and write with understanding.
- Sex ratio is females per 1,000 males; child sex ratio covers ages 0-6.
- Poverty may be absolute (below a minimum consumption line) or relative (compared with others).
- HDI combines life expectancy, education and per capita income; MPI counts overlapping deprivations in health, education and living standards.
Worked example
A district has 30 lakh children aged 0-14, 10 lakh people aged 60 and above, and 60 lakh people aged 15-59. Dependency ratio = (30 + 10) ÷ 60 × 100 = 66.7%. This means there are about 67 dependants for every 100 working-age persons. A falling dependency ratio can yield a demographic dividend, but only if the working-age population has education, skills and jobs.
Traps that cost marks
Sex ratio is not the same as child sex ratio. A poverty line is a consumption threshold, not the same as multidimensional deprivation. HDI is not based on income alone. A demographic dividend is not automatic; it requires jobs and human capital. Literacy is measured from age seven, not from birth.