8 The number of family members in ten families of a locality are as follows: 4, 3, 2, 2, 5, 6, 7, 3, 3, 5. (a) Find the mean size of family members of the above ten families. (b) How many families have their number of members less than the average family size?
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Answer:
a)To find average:- sum of all the numbers/total number of numbers
= 4+3+2+2+5+6+7+3+3+5/10
=4
b)5
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