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Following table gives frequency distribution of amount of bonus paid to the workers in a certain factory. Find median amount of bonus paid to the workers.

Bonus paid (in Rs.)
Below 500
Below 600
Below 700
Below 800
Below 900
Below 1000
Below 1100
No. of workers
4
12
24
41
51
58
60

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846.27

Rs.

812.27

Rs.

735.29

Rs.

801.27

Rs.

answer is D.

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Detailed Solution

Given is frequency distribution of amount of bonus paid to the workers in a certain factory.

Bonus paid (in Rs.)	Below 500	Below 600	Below 700	Below 800	Below 900	Below 1000	Below 1100
No. of workers	4	12	24	41	51	58	60

Median

= l + \frac{(\frac{N}{2} - cf)}{f_{m}} \times c

Here,
Class Interval,

c = 100

N = Σ f_{i}

\Rightarrow N = 60

Then,

\frac{N}{2} = 30

Median class

= 700 - 800

Frequency of median class,

f_{m} = 17

Lower boundary of median class,

l = 700

previous cumulative frequency of median class,

cf = 24

On substituting,

\Rightarrow

Median

= 700 + \frac{(\frac{60}{2} - 24)}{17} \times 100

\Rightarrow Median = 700 + \frac{(6)}{17} \times 100

\Rightarrow Median = 735.29

Thus, the median is 735.29.
Hence, the correct option is 4.

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