Question

4. In January 2015, the number of children in 10 families of a locality are:
4, 3, 4, 0, 2, 2.5, 2, 1, 3
S
Find the mean, median and mode.
At the end of the year, two families having children 0 and 1 vacated the house. As a
result, two more families having children 2 and 5 got the vacant accommodation. Find
the new mean, median and mode.​

Answer 1

1. mean = (4+3+4+0+2+2+5+2+1+3)/10= 26/10= 2.6

2. Median : arrange all observation in ascending or descending order.

0, 1, 2, 2, 2, 3, 3, 4, 4, 5.

median = (middle two number )/2 if number of observation are even.

median = (2+3)/2= 5/2 = 2.5

mode= repited observation = 2