Question

The table below summarizes the number of children per household for a sample of 37 high-income families.Number of householdsNumber of children9 415 213 3What is the mean number of children per household for these families? Round your answer to at least one decimal place.

Answer 1

Mean = total number of children/number of households

From the information given,

number of households

Total number of children = 9 x 4 + 15 x 2 + 13 x 3 = 36 + 30 + 39 = 105

Mean = 105/37 = 2.8

The mean number of children per household for these families = 2.8