Step 1: Identify the methods of calculating national income.
National income can be calculated using three main approaches: the production method, the income method, and the expenditure method.
Step 2: Production method.
Under the production method, the total value of all goods and services produced in a country is calculated, excluding the value of intermediate goods to avoid double counting.
Step 3: Income method.
The income method calculates national income by adding up all the incomes earned by individuals and businesses in the country, including wages, profits, rents, and interest.
Step 4: Expenditure method.
The expenditure method calculates national income by adding up all the expenditures made on final goods and services in the economy.