Explain the Gini coefficient and what a value of 0 vs 1 indicates.

Explain the Gini coefficient and what a value of 0 vs 1 indicates.

• A. Gini coefficient measures income inequality in a distribution; 0 means perfect equality, 1 means maximal inequality.
• B. Gini coefficient measures GDP growth rate.
• C. Gini coefficient measures total population.
• D. Gini coefficient measures literacy rates.

Answer: (A)

The Gini coefficient measures how evenly income is distributed across a population. It’s tied to the Lorenz curve, which shows the cumulative share of income earned by the bottom portion of people. The coefficient is derived from the area between the line of perfect equality and the Lorenz curve, relative to the total area under the line of equality. A value of zero means perfect equality—everyone has the same income. A value of one represents maximal inequality—the extreme case where one person has all the income and everyone else has none (theoretical; real data never hits exactly one). Because the Gini focuses on how income (or other resources) is distributed, it’s not about GDP growth, total population, or literacy rates. The statement that it measures income inequality and that 0 indicates perfect equality while 1 indicates maximal inequality is the accurate summary.

The Gini coefficient measures how evenly income is distributed across a population. It’s tied to the Lorenz curve, which shows the cumulative share of income earned by the bottom portion of people. The coefficient is derived from the area between the line of perfect equality and the Lorenz curve, relative to the total area under the line of equality. A value of zero means perfect equality—everyone has the same income. A value of one represents maximal inequality—the extreme case where one person has all the income and everyone else has none (theoretical; real data never hits exactly one). Because the Gini focuses on how income (or other resources) is distributed, it’s not about GDP growth, total population, or literacy rates. The statement that it measures income inequality and that 0 indicates perfect equality while 1 indicates maximal inequality is the accurate summary.