From the data given below construct a price index number of the group of four commodities using the appropriate formula:

219.12

The correct answer is Option (2) → 219.12

However, expenditure is given which is the product of price and quantity. To find out quantity total expenditure will be divided by the price per unit.

Since Fisher's formula is ideal formula, so we calculate price index number by Fisher's Method.

$\text{Fisher's index number } P_{01} = \sqrt{\frac{\sum p_1q_0}{\sum p_0q_0} \times \frac{\sum p_1q_1}{\sum p_0q_1}} \times 100$

$P_{01} = \sqrt{\frac{202}{91} \times \frac{199}{92}} \times 100$

$P_{01} = \sqrt{4.8015} \times 100 = 2.1912 \times 100 = 219.12$