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Question
The following table gives the number of children of 150 families in a village
No. of children (x) : 0 1 2 3 4 5
No. of families (f) : 10 21 55 42 15 7
Find the average number of children per family.
The following table gives the number of children of 150 families in a village
No. of children (x) : 0 1 2 3 4 5
No. of families (f) : 10 21 55 42 15 7
Find the average number of children per family.
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Solution
Average = 
= 
The average number of children per family is 2.3467
= The average number of children per family is 2.3467
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