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Question

The following table gives the life time of 200 neon lamps. The median class is

A
2500 - 3000
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B
1000 - 1500
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C
2000 - 2500
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Solution

The correct option is A 2500 - 3000

The median class is identified as the class whose cumulative frequency will be greater than n2, where 'n' is the sum of the frequencies. (n=200).
Next, we divide 200 by 2.

n2=2002=100

We now locate the class whose cumulative frequency is greater than 100.
"2500 - 3000" is the class whose cumulative frequency 155 is greater than 100.
The median class is 2500 - 3000.

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