To find the median of a grouped data graphically method
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Median is the middle value of the data.
When n is odd, median the 1/2(n+1) th observation.
When n is even, median is 1/2(n/2)th observation+(n/2 +1) th observation.
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graphically ...when total no. is odd then n+1/2 I.e median of 5 is 3.... nd in even n|2+1
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