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 + 11 + 15 + 5 = 38

Total children = $$(0 \times 7) + (1 \times 11) + (2 \times 15) + (3 \times 5)$$

= 11 + 30 + 15 = 56

$$\therefore$$ Average number of children per house = $$\frac{56}{38} = 1.47$$

=> Ans - (C)

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