Define & explain Mean & Median
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mean is the average value of no.of observation given. lt is equal to finding the average of the given no.s
median is the middlest value of arange of no.s arranged in ascending order.lf there are n no.s if n is odd then median = value of n+1/2 & if n is even then median = 1/2[ value of (n/2)th term + value of (n/2 + 1)th term]
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