Question

12 people of a locality are asked about number of hours they spent in doing welfare work for
their colony. Their response was 5, 7, 3, 4, 3, 11, 2, 4, 8, 9, 6 and 4 hours respectively. Find the
) Mean, (ii) Median and (iii) Mode of hours spent per week in social work by them.
​

Answer 1

Step-by-step explanation:

For Mean:

We know

Mean = Sum of observations/No. Of observations

=5+7+3+4+3+.......+4/12

=66/12

=5.5

For Median:

We know

Median=n+1/2 +1

=12+1/2 +1

=14/2

=7

And

For n/2

=12/2

=6

For Meadian :

Mode=5th term+6th term/2

=11+2/2

=13/2

=6.5

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