indicator
A measurement that gives evidence about development or quality of life.
HDI
Human Development Index: health, education and income combined into a number from 0 to 1.
scatter graph
Points that show whether two variables are related.
population pyramid
Back-to-back bar graphs showing a population by age and sex.
mixed economy
Private businesses plus government services and rules.
Gini coefficient
A measure of income inequality from 0 (equal) to 1 (very unequal).
interrelationship
A connection where factors affect each other.
NGO
A non-profit, non-governmental organization.