The GDP deflator is calculated as
- A.(Real GDP divided by nominal GDP) multiplied by 100
- B.(Nominal GDP divided by real GDP) multiplied by 100
- C.Nominal GDP minus real GDP
- D.GDP divided by population
Show answer
Correct answer: B. (Nominal GDP divided by real GDP) multiplied by 100
Explanation
The correct answer is B. The deflator compares what the year's output costs at this year's prices with what the same output would cost at base year prices, so nominal GDP goes on top and real GDP below, and the ratio is expressed as a percentage. A value above a hundred means the general price level has risen since the base year.
Option A inverts the fraction and would show prices falling whenever they are in fact rising. Option C gives a difference in rupees, which is not an index and cannot be compared across years or countries. Option D is the formula for per capita income, not for a price index. The deflator differs from the consumer and wholesale price indices in covering every good and service included in GDP rather than a fixed basket.