Question

Find out the median from the following : 57 58 61 42 38 65 72 66 88.

Answer 1

Answer:

given that

41,43,127,99,61,92,71,58,57

arrange the data in ascending order

41,43,57,58,61,71,92,99,127

Here observe that No' of observations (n) are odd i.e n=9

So median is

2

n+1

th term

Median =

2

n+1

th term =

n

9+1

th term

=5 th term

=61

58 is replaced by 85

then new data is

41,43,57,85,61,71,92,99,127

arrange the data in ascending order

41,43,57,61,71,85,92,99,127

Here observe that no's observation are odd i.e n=9

So

median is

2

n+1

th term

Median =

2

9+1

th term

=5th term

=71

∴ new median =71