Study Notes
The topic covers the concepts of equality, equity, and poverty, focusing on how they are measured and their implications in economics. It explains the use of the Lorenz curve and Gini coefficient to assess income inequality.
- Equality — equal treatment of individuals. Example: Everyone receives the same salary regardless of their role.
- Equity — fair treatment based on individual needs. Example: Providing additional resources to students who need more help.
- Economic Inequality — differences in income and wealth distribution among a population. Example: Some people own multiple properties while others have none.
- Lorenz Curve — a graphical representation of income distribution. Example: A curve showing that the bottom 20% of a population earns 10% of total income.
- Gini Coefficient — a numerical measure of income inequality ranging from 0 to 1. Example: A Gini coefficient of 0.4 indicates moderate inequality.
- Absolute Poverty — lack of income to meet basic needs. Example: Living on less than $1.90 a day.
- Relative Poverty — income below a certain percentage of the median income. Example: Earning less than 50% of the median income in a country.
Exam Tips
Key Definitions to Remember
- Equality
- Equity
- Economic Inequality
- Lorenz Curve
- Gini Coefficient
- Absolute Poverty
- Relative Poverty
Common Confusions
- Confusing equality with equity
- Misunderstanding the Lorenz curve as showing wealth distribution instead of income
Typical Exam Questions
- What is the difference between equality and equity? Equality is about equal treatment, while equity is about fair treatment based on needs.
- How is the Gini coefficient calculated? It is the ratio of the area between the Lorenz curve and the line of perfect equality to the total area under the line of perfect equality.
- What does a Lorenz curve illustrate? It shows the distribution of income across different population quintiles.
What Examiners Usually Test
- Understanding of the Lorenz curve and Gini coefficient
- Ability to explain the implications of economic inequality
- Differences between absolute and relative poverty