What does size distribution of income refer to?

Size distribution of income refers to how income is divided among different individuals or groups within a society, particularly in relation to the varying levels of income that different segments of the population receive. This measure looks at the proportion of total income earned by different income brackets, highlighting disparities in income levels.

In this context, understanding size distribution is crucial for analyzing economic inequality, as it reflects the economic well-being of various groups and can indicate how wealth is shared within society. It helps policymakers and economists gauge the effectiveness of economic policies and social programs aimed at addressing income inequality.

The other options do not encapsulate the concept of size distribution of income effectively. For instance, the average income of all citizens (the first option) presents a single figure that doesn't showcase the range or disparity within income levels. The total wealth owned by individuals (the third option) focuses on accumulated assets rather than how income streams are divided. Meanwhile, the income generated from public services (the fourth option) does not pertain to the income distribution among different income groups at all, but rather concerns revenue sources for governments.