National income calculation aims to measure the total value of final goods and services produced in an economy. Intermediate goods are those used in the production process of other goods. To avoid overstating the economic output, a specific accounting principle is followed regarding these goods.
C) The problem of double counting. Excluding intermediate goods is a fundamental principle in national income accounting to ensure that the value of goods and services is not counted more than once, thus providing an accurate measure of economic output.
National income can be calculated using three main methods: the income method, the expenditure method, and the product (or value-added) method. The question specifically asks about the income method.
A) Wages, rent, interest and profit. This option correctly lists the four main components of factor income that are summed up to arrive at national income using the income method. More precisely, it's Net National Product at Factor Cost (NNPFC) or National Income (NI).
The question asks about the expenditure method of measuring Gross Domestic Product (GDP). This method calculates GDP by summing up all the spending on final goods and services in an economy during a specific period.
Correct Option: A) C + I + G + (X - M) is the correct formula for measuring GDP using the expenditure method, representing the sum of all final spending in the economy.
The question asks about the aggregate income measured at different points in a simple two-sector circular flow model. We need to understand the fundamental principle of the circular flow of income, which states that in a closed economy without government or foreign trade, total production, total income, and total expenditure are always equal.
A) Equal at all three points - This is correct because, by definition, in the circular flow of income, the total value of goods and services produced (product), the total income generated from this production, and the total expenditure on these goods and services are always equal. This reflects the fundamental identity of national income accounting.
The question asks to identify a 'flow' variable from the given options. In economics, variables are broadly classified into 'stock' variables and 'flow' variables. Understanding the distinction between these two types is crucial for answering this question.
A) National income is a flow variable because it is measured over a period of time (e.g., annually).
The question asks to identify a 'stock' variable from the given options. In economics, variables are classified as either stock or flow variables. Understanding the distinction between these two types is crucial for correctly answering this question.
Correct Option: C) Capital is a stock variable because it represents the total amount of assets existing at a specific point in time.