Question 74

The following table shows the number of children in each house of a society

What is the average number of children per house

Solution

Total number of houses = 7 + 9 + 20 + 3 = 39

Total children = $$(0 \times 7) + (1 \times 9) + (2 \times 20) + (3 \times 3)$$

= 9 + 40 + 9 = 58

$$\therefore$$ Average number of children per house = $$\frac{58}{39} = 1.49$$

=> Ans - (D)

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