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Question

Calculate the median from the following data:
Rent (in Rs.): 15−25 25−35 35−45 45−55 55−65 65−75 75−85 85−95
No. of Houses: 8 10 15 25 40 20 15 7

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Solution

First we prepare the following cummulative table to compute the median.

Here,

So,

Thus, the cumulative frequency just greater than 70 is 98 and the corresponding class is .

Therefore, is the median class.

Here,

We know that



Hence, the median is 58.


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