Question:
The number of children in 10 families of a locality are
2, 4, 3, 4, 2, 0, 3, 5, 1, 6.
Find the mean number of children per family.
Solution:
Numbers of children in 10 families = 2, 4, 3, 4, 2, 0, 3, 5, 1 and 6.
Thus, we have:
Mean $=\frac{\text { Sum of observa tions }}{\text { Number of observations }}$
$=\frac{2+4+3+4+2+0+3+5+1+6}{10}$
$=\frac{30}{10}$
$=3$
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