Which of the following is NOT included in inventory investment when calculating national income?
- A.Change in sales during the year
- B.Change in stock of raw material
- C.Change in stock of semi-finished goods
- D.Change in stock of finished goods
Show answer
Correct answer: A. Change in sales during the year
Explanation
The correct answer is A, Change in sales during the year. Inventory investment, also called change in stock, measures the physical stock of goods a firm holds at the end of the year minus the stock it held at the start. Sales are goods that have already left the firm and gone to buyers, so a change in sales is part of consumption or final demand and is never counted as inventory. The three items that do make up stock are unsold finished goods, goods still being made and raw material waiting to be used. B is wrong because a change in the stock of raw material is a clear part of inventory. C is wrong because semi finished goods, also called work in progress, are counted in stock. D is wrong because unsold finished goods are the most obvious part of inventory. Exam tip: inventory equals raw material plus semi finished plus finished goods, and change in stock is a part of gross domestic capital formation.