# If 35 is removed

Given series is,

30, 34, 35, 36, 37, 38, 39, 40

We know that, if even no of terms or observations are given, then the median of data is mean of the values of term and term. Where n is no of terms.

In this case, no of terms,n = 8 i.e. median of above data is mean of 4th and 5th term

In this case,

4th term = 36

5th term = 37

median median = 37.5

If 35 is removed, the series will be

30, 34, 36, 37, 38, 39, 40

No of terms = 7

We know that if there are odd number of terms in a data, then the median of data is term. Where n is no of terms

n = 7 median = 4th term = 37

Difference in both medians = 37.5 - 37 = 0.5

Hence, median increases by 0.5.

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A data has 25 obsRS Aggarwal - Mathematics