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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
From the table,
$$Average\ number\ of\ children\ per\ house\ =\frac{Total\ number\ of\ children\ }{Total\ number\ of\ houses}\ =\frac{\left(0\times4\right)+\left(1\times13\right)+\left(2\times17\right)+\left(3\times5\right)\ }{4+13+17+5}\ =\frac{0+13+34+15\ }{39}=\frac{\ 62}{39}=1.59\ $$
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