Multiple choice

The following table shows the numbers of children in each house of a society. | Number of Children | Number of Houses | | --- | --- | | 0 | 4 | | 1 | 10 | | 2 | 19 | | 3 | 3 | What is the average number of children per house?

  1. 1.58

  2. 1.83

  3. 2.08

  4. 1.33
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A Correct answer
Explanation

Total children = (0*4) + (1*10) + (2*19) + (3*3) = 0 + 10 + 38 + 9 = 57. Total houses = 4 + 10 + 19 + 3 = 36. Average = 57 / 36 = 1.5833.

AI explanation

We use the weighted mean formula to compute the average number of children per house. The sum of the products of children and houses is (0*4) + (1*10) + (2*19) + (3*3) = 57. We divide this by the total number of houses, which is 4 + 10 + 19 + 3 = 36, yielding 57 / 36 = 1.58. The average number of children per house is 1.58.

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