Giving reasons, explain how the following are treated in estimating national income? 
(i)    Wheat grown by a farmer but used entirely for family's consumption.
(ii)    Earnings of shareholders from the sale of shares.
(iii)    Expenditure by government in providing free education.

(i) Wheat grown by a farmer is addition to the current flow of goods in the country no matter, it is used for self-consumption. Therefore, its imputed value should be included in national income when calculated through production method.
(ii) Earnings from sale of shares should not be included in national income because shares are just paper titles which do not contribute directly in production.
(iii) This, being final expenditure of the government, should be included in national income when calculated by expenditure method.